Herbert Zirath

Professor at Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Herbert Zirath (M' 86-SM'08-F'11) was born in Göteborg, Sweden, on March 20, 1955. He received the M. Sc and Ph. D. degree in electrical engineering from Chalmers University, Göteborg, Sweden, in 1980 and 1986, respectively. From 1986 to 1996 he was a researcher at the Radio and Space Science at Chalmers University, engaged in developing a GaAs and InP based HEMT technology, including devices, models and circuits. In the spring-summer 1998 he was research fellow at Caltech, Pasadena, USA, engaged in the design of MMIC frequency multipliers and Class E Power amplifiers. He is since 1996 Professor in High Speed Electronics at the Department of Microtechnology and Nanoscience, MC2, at Chalmers University. He became the head of the Microwave Electronics Laboratory 2001. At present he is leading a group of approximately 40 researchers in the area of high frequency semiconductor devices and circuits. His main research interests include MMIC designs for wireless communication and sensor applications based on III-V, III-N, Graphene, and silicon devices. He is author/co-author of more than 590 refereed journal/conference papers, h-index of 39, and holds 5 patents. He is research fellow at Ericsson AB, leading the development of a D-band (110-170 GHz) chipset for high data rate wireless communication. He is a co-founder of Gotmic AB, a company developing highly integrated frontend MMIC chip-sets for 60 GHz and E-band wireless communication.

Source: orcid.org

Projects

2016–2018

Graphene Core1. Graphene-based disruptive technologies (Graphene Flagship)

Jari Kinaret Condensed Matter Theory
Sergey Kubatkin Quantum Device Physics
Saroj Prasad Dash Quantum Device Physics
Jan Stake Terahertz and Millimetre Wave Laboratory
Herbert Zirath Microwave Electronics
European Commission (Horizon 2020)

2013–2016

Graphene-Based Revolutions in ICT And Beyond (Graphene Flagship)

Jari Kinaret Condensed Matter Theory
Jan Stake Terahertz and Millimetre Wave Laboratory
Sergey Kubatkin Quantum Device Physics
Herbert Zirath Microwave Electronics
Mikael Fogelström Applied Quantum Physics
Ermin Malic Condensed Matter Theory
European Commission (FP7)

45 publications exist
2016–2018

Millimeter-wave Backhaul Links at above 100 Gbits/s - Taking smart antennas to the limits

Thomas Eriksson Communication Systems
Christian Fager Microwave Electronics
Koen Buisman Microwave Electronics
Dhecha Nopchinda Microwave Electronics
Marianna Ivashina Antennas
Herbert Zirath Microwave Electronics
Amina Piemontese Communication Systems
VINNOVA

2012–2017

The Swedish Graphene Initiative

Mikael Fogelström Applied Quantum Physics
Floriana Lombardi Quantum Device Physics
Avgust Yurgens Quantum Device Physics
Herbert Zirath Microwave Electronics
Jan Stake Terahertz and Millimetre Wave Laboratory
Elsebeth Schröder Quantum Device Physics
Jari Kinaret Condensed Matter Theory
Sergey Kubatkin Quantum Device Physics
Tomas Löfwander Applied Quantum Physics
Eva Olsson Eva Olsson Group
Andreas Isacsson Condensed Matter Theory
Niklas Rorsman Microwave Electronics
Knut and Alice Wallenberg Foundation

2015–2019

Semiconductor materials for power electronics (SEMPEL)

Herbert Zirath Microwave Electronics
Danish Council for Strategic Research

2013–2017

Energy efficient millimeter wave transmitters

Christian Fager Microwave Electronics
Niklas Rorsman Microwave Electronics
Dan Kuylenstierna Microwave Electronics
William Hallberg Microwave Electronics
Herbert Zirath Microwave Electronics
Mattias Thorsell Microwave Electronics
VINNOVA

2015–2018

Mikrovågskomponenter, NRFP 3

Herbert Zirath Microwave Electronics
Swedish National Space Board

2011–2012

Signalprocessning i framtida kommunikationssystem med extremt hög datakapacitet

Magnus Karlsson Photonics
Herbert Zirath Microwave Electronics
VINNOVA

2011–2016

III-Nitrides-based electronics for future microwave systems

Niklas Rorsman Microwave Electronics
Herbert Zirath Microwave Electronics
Swedish Foundation for Strategic Research (SSF)

2014–2017

Gigabits at THz frequencies

Herbert Zirath Microwave Electronics
Bing Zhang Microwave Electronics
Sona Carpenter Microwave Electronics
Swedish Research Council (VR)

2012–2013

Millimeter-wave and terahertz systems:

Herbert Zirath Microwave Electronics
VINNOVA

2014–2019

Multi-Tbps Optical Interconnects (MuTOI)

Anders Larsson Photonics
Peter Andrekson Photonics
Herbert Zirath Microwave Electronics
Swedish Foundation for Strategic Research (SSF)

2011–2014

Högfrekventa Integrerade kretsar (MMIC) för rymdtillämpningar

Herbert Zirath Microwave Electronics
Oliver Silva Barrera Microwave Electronics
Swedish National Space Board

2014–2019

Lösningar för trådlös kommunikation med hög datatakt

Herbert Zirath Microwave Electronics
Victor Belitsky Advanced Receiver Development
Thomas Swahn Microwave Electronics
Thomas Eriksson Communication Systems
Swedish Foundation for Strategic Research (SSF)

2014–2018

Bridging the THz-gap

Herbert Zirath Microwave Electronics
Niklas Rorsman Microwave Electronics
Tommy Ive Photonics
Anna Malmros Microwave Electronics
Knut and Alice Wallenberg Foundation

There might be more projects where Herbert Zirath participates, but you have to be logged in as a Chalmers employee to see them.

Publications

2017

Analysis of a MEMS Tuned Cavity Oscillator on X-Band

Mikael Hörberg, Thomas Emanuelsson, Herbert Zirath et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 65 (9), p. 3257-3268
Journal article
2017

Does LO Noise Floor Limit Performance in Multi-Gigabit Millimeter-Wave Communication?

Jingjing Chen, Zhongxia Simon He, Dan Kuylenstierna et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 27 (8), p. 769-771
Journal article
2017

A Non-galvanic D-band MMIC-to-Waveguide Transition Using eWLB Packaging Technology

Ahmed Adel Hassona, Zhongxia Simon He, Chiara Mariotti et al
IEEE International Microwave Symposium (2017)
Paper in proceedings
2017

Investigation on 3-D-Printing Technologies for Millimeter-Wave and Terahertz Applications

B. Zhang, Y. X. Guo, Herbert Zirath et al
Proceedings of the IEEE. Vol. 105 (4), p. 723-736
Journal article
2017

Time domain microwave imaging system for biomedical applications

Xuezhi Zeng, Albert Monteith, Andreas Fhager et al
European Microwave Week 2016: "Microwaves Everywhere", EuMW 2016 - Conference Proceedings; 46th European Microwave Conference, EuMC 2016, p. 679-682
Paper in proceedings
2017

High speed optical interconnects with 850 nm VCSELs and advanced modulation formats

Krzysztof Szczerba, Tamas Lengyel, Zhongxia Simon He et al
Journal of Logic and Computation. Vol. 10122, p. Article nr 101220G-
Journal article
2017

D-band Waveguide Transition Based on Linearly Tapered Slot Antenna

Ahmed Adel Hassona, Zhongxia Simon He, Vessen Vassilev et al
2017 IMAPS Nordic Conference on Microelectronics Packaging, NordPac 2017, Goteborg, Sweden, 18-20 June 2017, p. 64-67
Paper in proceedings
2017

High-Gain Graphene Transistors with a Thin AlOx Top-Gate Oxide

E. Guerriero, P. Pedrinazzi, A. Mansouri et al
Scientific Reports. Vol. 7 (1), p. Article Number: 2419-
Journal article
2017

D-band Waveguide Transition Based on Linearly Tapered Slot Antenna

Ahmed Adel Hassona, Zhongxia Simon He, Vessen Vassilev et al
2017 IMAPS Nordic Conference on Microelectronics Packaging, NordPac 2017, Goteborg, Sweden, 18-20 June 2017, p. 64-67
Paper in proceedings
2017

Wafer scale millimeter-wave integrated circuits based on epitaxial graphene in high data rate communication

Omid Habibpour, Zhongxia Simon He, Wlodek Strupinski et al
Scientific Reports. Vol. 7, p. 41828-
Journal article
2017

An 8 Gbps E-band QAM Transmitter Using Symbol-based Outphasing Power Combining Technique

Sining An, Zhongxia Simon He, Jingjing Chen et al
Paper in proceedings
2017

Optoelectronics Enabled Dense Patch Antenna Array for Future 5G Cellular Applications

Zhongxia Simon He, Tamas Lengyel, Jian Yang et al
Paper in proceedings
2017

A W-band MMIC Resistive Mixer Based on Epitaxial Graphene FET

Omid Habibpour, Zhongxia Simon He, W. Strupinski et al
IEEE Microwave and Wireless Components Letters. Vol. 27 (2), p. 168-170
Journal article
2017

Noise performance comparison between two different types of time-domain systems for microwave detection

Xuezhi Zeng, Albert Monteith, Andreas Fhager et al
International Journal of Microwave and Wireless Technologies. Vol. 9 (3), p. 535-542
Journal article
2017

Silicon Taper Based D-Band Chip to Waveguide Interconnect for Millimeter-Wave Systems

Ahmed Adel Hassona, Vessen Vassilev, Zhongxia Simon He et al
IEEE Microwave and Wireless Components Letters. Vol. 27 (12)
Journal article
2017

RF-MEMS Tuned GaN HEMT based Cavity Oscillator for X-band

Mikael Hörberg, Thomas Emanuelsson, Per Ligander et al
IEEE Microwave and Wireless Components Letters. Vol. 27 (1), p. 46-48
Magazine article
2017

Design and Analysis of a Wideband Gilbert Cell VGA in 0.25 um InP DHBT Technology With DC-40-GHz Frequency Response

Marcus Gavell, Sten Gunnarsson, Iltcho Angelov et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 65 (10), p. 3962-3974
Journal article
2017

Investigation of stimulus signals for a time domain microwave imaging system

Xuezhi Zeng, Albert Monteith, Andreas Fhager et al
IET Microwaves, Antennas and Propagation. Vol. 11 (11), p. 1636 - 1643
Journal article
2016

A D-Band Frequency Sixtupler MMIC With Very Low DC Power Consumption

M. Q. Bao, Rumen Kozhuharov, Herbert Zirath
IEEE Microwave and Wireless Components Letters. Vol. 26 (9), p. 726-728
Journal article
2016

Microwave Noise Analysis in InP and GaAs HBTs

P. Sakalas, T. Nardmann, A. Simukovic et al
Technical Digest - IEEE Compound Semiconductor Integrated Circuit Symposium, CSIC. Vol. 2016-November, p. Art. no 7751054-
Paper in proceedings
2016

A Metallic 3-D Printed E-Band Radio Front End

Bing Zhang, Herbert Zirath
IEEE Microwave and Wireless Components Letters. Vol. 26 (5), p. 331-333
Journal article
2016

A QFN packaged grid array antenna in low dielectric constant LTCC for D-band applications

Camilla Kärnfelt, Bing Zhang, Herbert Zirath
Paper in proceedings
2016

Graphene FET Gigabit On-Off Keying Demodulator at 96 GHz

Omid Habibpour, Zhongxia Simon He, Wlodek Strupinski et al
IEEE Electron Device Letters (3), p. 333-336
Journal article
2016

Metallic 3-D Printed Antennas for Millimeter- and Submillimeter Wave Applications

Bing Zhang, Zhaoyao Zhan, Y. Cao et al
IEEE Transactions on Terahertz Science and Technology. Vol. 6 (4), p. 592-600
Journal article
2016

Metallic 3-D Printed Rectangular Waveguides for Millimeter-Wave Applications

Bing Zhang, Herbert Zirath
IEEE Transactions on Components, Packaging and Manufacturing Technology. Vol. 6 (5), p. 796-804
Journal article
2016

A D-Band Packaged Antenna on Organic Substrate With High Fault Tolerance for Mass Production

Bing Zhang, Camilla Kärnfelt, H. Gulan et al
IEEE Transactions on Components, Packaging and Manufacturing Technology. Vol. 6 (3), p. 359-365
Journal article
2016

Millimeter Wave E-Plane Transition From Waveguide to Microstrip Line With Large Substrate Size Related to MMIC Integration

Ashraf Uz Zaman, Vessen Vassilev, Per-Simon Kildal et al
IEEE Microwave and Wireless Components Letters. Vol. 26 (7), p. 481-483
Journal article
2016

A V-Band Stacked HEMT Power Amplifier With 25-dBm Saturated Output Power in 0.1-mu m InGaAs Technology

Marcus Gavell, Iltcho Angelov, Mattias Ferndahl et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 64 (12), p. 4232-4240
Journal article
2016

A D-Band 48-Gbit/s 64-QAM/QPSK Direct-Conversion I/Q Transceiver Chipset

Sona Carpenter, Dhecha Nopchinda, Morteza Abbasi et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 64 (4), p. 1285-1296
Journal article
2016

Octave Band Linear MMIC Amplifier With+40-dBm OIP3 for High-Reliability Space Applications

Oliver Silva Barrera, Iltcho Angelov, Herbert Zirath
IEEE Transactions on Microwave Theory and Techniques. Vol. 64 (7), p. 2059-2067
Journal article
2016

An Energy Efficient 56 Gbps PAM-4 VCSEL Transmitter Enabled by a 100 Gbps Driver in 0.25 µm InP DHBT Technology

Jingjing Chen, Zhongxia Simon He, Tamas Lengyel et al
Journal of Lightwave Technology. Vol. 34 (21), p. 954-4964
Journal article
2015

Suppression of Parasitic Substrate Modes in Multilayer Integrated Circuits

Klas Eriksson, Sten Gunnarsson, Per-Åke Nilsson et al
IEEE Transactions on Electromagnetic Compatibility. Vol. 57 (3), p. 591-594
Journal article
2015

Assessment of H-intercalated graphene for microwave FETs through material characterization and electron transport studies

Michael Winters, Omid Habibpour, I. G. Ivanov et al
Carbon. Vol. 81 (1), p. 96-104
Journal article
2015

Integration of a 140 GHz Packaged LTCC Grid Array Antenna with an InP Detector

Bing Zhang, H. Gulan, T. Zwick et al
IEEE Transactions on Components, Packaging and Manufacturing Technology. Vol. 5 (8), p. 1060-1068
Journal article
2015

Phase-Noise Analysis of an X-Band Ultra-Low Phase-Noise GaN HEMT Based Cavity Oscillator

Mikael Hörberg, Thomas Emanuelsson, Szhau Lai et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 63 (8), p. 2619-2629
Journal article
2015

Quasi-free-standing monolayer and bilayer graphene growth on homoepitaxial on-axis 4H-SiC(0001) layers

J. Hassan, Michael Winters, I. G. Ivanov et al
Carbon. Vol. 82 (C), p. 12-23
Journal article
2015

Microwave technology in medical diagnostics and treatment

Andreas Fhager, Hana Dobsicek Trefna, Pegah Takook et al
IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2015, Taipei, Taiwan, 21-23 September 2015, p. 133-134
Paper in proceedings
2015

High frequency graphene transistors: Can a beauty become a cash cow?

D. Neumaier, Herbert Zirath
2D Materials. Vol. 2 (3)
Journal article
2015

Microwave System Development for Medical Diagnostics

Xuezhi Zeng, Andreas Fhager, Mikael Persson et al
International Federation for Medical and Biological Engineering Proceedings. Vol. 48, p. 117-119
Paper in proceedings
2015

InP DHBT Amplifier Modules Operating Between 150 and 300 GHz Using Membrane Technology

Klas Eriksson, Peter Sobis, Sten Gunnarsson et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 63 (2), p. 433-440
Journal article
2015

Science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems

A. C. Ferrari, F. Bonaccorso, V. Fal'ko et al
Nanoscale. Vol. 7 (11), p. 4598-4810
Journal article
2015

InP DHBT Distributed Amplifiers With Up to 235-GHz Bandwidth

Klas Eriksson, I.Z. Darwazeh, Herbert Zirath
IEEE Transactions on Microwave Theory and Techniques. Vol. 63 (4), p. 1334-1341
Journal article
2015

3D printed iris bandpass filters for millimetre-wave applications

Bing Zhang, Herbert Zirath
Electronics Letters. Vol. 51 (22), p. 1791-1792
Journal article
2015

A Hardware Efficient Implementation of a Digital Baseband Receiver for High-Capacity Millimeter-Wave Radios

Zhongxia Simon He, Jingjing Chen, Christer Svensson et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 63 (5), p. 1683-1692
Journal article
2015

A 40 Gbps DQPSK Modem for Millimeter-wave Communications

Sining An, Jingjing Chen, Zhongxia Simon He et al
Asia-Pacific Microwave Conference Proceedings APMC 2015. Vol. 1
Paper in proceedings
2015

Attempt of the Metallic 3D Printing Technology for Millimeter-Wave Antenna Implementations

Bing Zhang, Peter Linner, Camilla Kärnfelt et al
Asia-Pacific Microwave Conference, APMC 2015. Vol. 2
Paper in proceedings
2015

Fully Integrated D-Band Direct Carrier Quadrature (I/Q) Modulator and Demodulator Circuits in InP DHBT Technology

Sona Carpenter, Morteza Abbasi, Herbert Zirath
IEEE Transactions on Microwave Theory and Techniques. Vol. 63 (5), p. 1666-1675
Journal article
2015

4 W Highly Linear and Reliable GaN Power Amplifier for C-Band Applications

Oliver Silva Barrera, Iltcho Angelov, Herbert Zirath
Asia-Pacific Microwave Conference, APMC 2015; Jinling HotelNanjing; China; 6 December 2015 through 9 December 2015. Vol. 3, p. Art. no. 7413430-
Paper in proceedings
2015

Cryogenic Low Noise Amplifiers in an InP HEMT MMIC Process

Per-Åke Nilsson, Arsalan Pourkabirian, Joel Schleeh et al
Asia-Pacific Microwave Conference, APMC 2015, Nanjing, China, 6-9 December 2015. Vol. 1, p. Art. no. 7411746-
Paper in proceedings
2015

A MMIC GaN HEMT Voltage-Controlled-Oscillator with high tuning linearity and low phase noise

Thi Ngoc Do Thanh, Szhau Lai, Mikael Hörberg et al
Compound Semiconductor Integrated Circuit Symposium (CSICS), 2015 IEEE ; 37th IEEE International Symposium on Workload Characterization, IISWC 2015; New Orleans; United States; 11 October 2015 through 14 October 2015 (Article number 7314478)
Paper in proceedings
2015

A High Voltage mm-wave Stacked HEMT Power Amplifier in 0.1 mu m m InGaAs Technology

Marcus Gavell, Iltcho Angelov, Mattias Ferndahl et al
Journal of Logic and Computation
Paper in proceedings
2015

A 110-170-GHz Multi-Mode Transconductance Mixer in 250-nm InP DHBT Technology

Yu Yan, Mingquang Bao, Sten Gunnarsson et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 63 (9), p. 2897-2904
Journal article
2015

A 15-Gb/s 8-PSK Demodulator With Comparator-Based Carrier Synchronization

Zhongxia Simon He, Dhecha Nopchinda, Thomas Swahn et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 63 (8), p. 2630-2637
Journal article
2015

Developing Graphene based MMICs on SiC substrate

Omid Habibpour, Niklas Rorsman, Herbert Zirath
Paper in proceedings
2015

Attempt of the Metallic 3D Printing Technology for Millimeter-Wave Antenna Implementations

Bing Zhang, Peter Linner, Camilla Kärnfelt et al
Asia-Pacific Microwave Conference, APMC 2015. Vol. 2
Paper in proceedings
2015

A data-rate adaptable modem solution for millimeter-wave wireless fronthaul networks

Jingjing Chen, Zhongxia Simon He, Yinggang Li et al
2015 IEEE International Conference on Communication Workshop, ICCW 2015, p. 1-6
Paper in proceedings
2015

mm-Wave noise modeling in advanced SiGe and InP HBTs

P. Sakalas, M. Schroter, Herbert Zirath
Journal of Computational Electronics. Vol. 14 (1), p. 62-71
Journal article
2014

A 115-155 GHz quadrature up-converting MMIC mixer in InP DHBT technology

Sona Carpenter, Morteza Abbasi, Herbert Zirath
2013 8th European Microwave Integrated Circuits Conference, EuMIC 2013 - Held as Part of 16th European Microwave Week, EuMW 2013, p. 113-116
Paper in proceedings
2014

A highly integrated chipset for 40 Gbps wireless D-band communication based on a 250 nm InP DHBT technology

Sona Carpenter, Zhongxia Simon He, M. Bao et al
Technical Digest - IEEE Compound Semiconductor Integrated Circuit Symposium, CSIC
Paper in proceedings
2014

Low Phase Noise GaN HEMT Oscillators With Excellent Figures of Merit

Szhau Lai, Dan Kuylenstierna, MUSTAFA ÖZEN et al
IEEE Microwave and Wireless Components Letters. Vol. 24 (6), p. 412-414
Journal article
2014

Development of a Time Domain Microwave System for Medical Diagnostics

Xuezhi Zeng, Andreas Fhager, Zhongxia Simon He et al
IEEE Transactions on Instrumentation and Measurement. Vol. 63 (12), p. 2931-2939
Journal article
2014

A D-Band Keyable High Efficiency Frequency Quadrupler

M. Q. Bao, Rumen Kozhuharov, J. J. Chen et al
IEEE Microwave and Wireless Components Letters. Vol. 24 (11), p. 793-795
Journal article
2014

Transformer-Based Broadband High-Linearity HBT Gm-Boosted Transconductance Mixers

Jian Zhang, M. Q. Bao, Dan Kuylenstierna et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 62 (1), p. 92-99
Journal article
2014

A High-Speed Power Detector for D-Band Communication

M. Q. Bao, J. J. Chen, Rumen Kozhuharov et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 62 (7), p. 1515-1524
Journal article
2014

InP DHBT wideband amplifiers with up to 235 GHz bandwidth

Klas Eriksson, I.Z. Darwazeh, Herbert Zirath
Journal of Logic and Computation, p. Art. no. 6848436-
Paper in proceedings
2014

14 Gbps on-off keying modulator and demodulator for D-band communication

M. Bao, J. Chen, Rumen Kozhuharov et al
2014 IEEE International Wireless Symposium (IWS), 24-26 March 2014, X'ian, p. (4 pp)-
Paper in proceedings
2014

Design and characterization of a negative resistance Common Emitter InP Double Heterojunction Bipolar Transistor subcircuit for millimeter wave and submillimeter wave applications

C. Poole, I.Z. Darwazeh, Herbert Zirath et al
44th European Microwave Conference, EuMC 2014 - Held as Part of the 17th European Microwave Week, EuMW 2014; Fiera di RomaRome; Italy; 6 October 2014 through 9 October 2014, p. 933-936
Paper in proceedings
2014

A 80-95 GHz direct quadrature modulator in SiGe technology

Morteza Abbasi, Sona Carpenter, Herbert Zirath et al
SiRF 2014 - 2014 IEEE 14th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, p. 56-58
Paper in proceedings
2014

Calculation of the Performance of Communication Systems from Measured Oscillator Phase Noise

M Reza Khanzadi, Dan Kuylenstierna, Ashkan Panahi et al
IEEE Transactions on Circuits and Systems I: Regular Papers. Vol. 61 (5), p. 1553-1565
Journal article
2014

A G-Band (140-220 GHz) planar stubbed branch-line balun in BCB technology

Sona Carpenter, Morteza Abbasi, Yogesh Karandikar et al
2013 3rd Asia-Pacific Microwave Conference, APMC 2013, Seoul, South Korea, 5-8 November 2013, p. 273-275
Paper in proceedings
2014

High gain graphene field effect transistors for wideband amplifiers

Omid Habibpour, Michael Winters, Niklas Rorsman et al
44th European Microwave Conference, EuMC 2014 - Held as Part of the 17th European Microwave Week, EuMW 2014; Fiera di RomaRome; Italy; 6 October 2014 through 9 October 2014, p. 371-373
Paper in proceedings
2014

Imaging front-end for thermal detection using an InP DHBT process

Vessen Vassilev, Herbert Zirath, Yogesh Karandikar
International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, p. Art. no. 6956217-
Paper in proceedings
2014

Design and Characterization of H-Band (220-325 GHz) Amplifiers in a 250-nm InP DHBT Technology

Klas Eriksson, Sten Gunnarsson, Vessen Vassilev et al
IEEE Transactions on Terahertz Science and Technology. Vol. 4 (1), p. 56-64
Journal article
2014

High linearity MMIC power amplifier design with controlled junction temperature

Oliver Silva Barrera, Iltcho Angelov, Herbert Zirath et al
International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits, INMMiC 2014, p. Art. no. 6815096-
Paper in proceedings
2014

A High Power-Efficiency D-Band Frequency Tripler MMIC With Gain Up to 7 dB

M. Q. Bao, Rumen Kozhuharov, Herbert Zirath
IEEE Microwave and Wireless Components Letters. Vol. 24 (2), p. 123-125
Journal article
2014

A compact 340 GHz 2x4 patch array with integrated subharmonic gilber core mixer as a building block for multi-pixel imaging frontends

Yogesh Karandikar, Herbert Zirath, Yu Yan et al
Technical Digest - IEEE Compound Semiconductor Integrated Circuit Symposium, CSIC
Paper in proceedings
2014

An InP MMIC process optimized for low noise at Cryo

Per-Åke Nilsson, Joel Schleeh, Niklas Wadefalk et al
Technical Digest - IEEE Compound Semiconductor Integrated Circuit Symposium, CSIC
Paper in proceedings
2014

Evaluation of an InAlN/AlN/GaN HEMT with Ta-based ohmic contacts and PECVD SiN passivation

Anna Malmros, P. Gamarra, Mattias Thorsell et al
Physica Status Solidi (C) Current Topics in Solid State Physics. Vol. 11 (3-4), p. 924-927
Paper in proceedings
2014

A V-band high linearity two-stage subharmonically pumped mixer

M. Bao, Y. Li, Herbert Zirath
European Microwave Week 2014: "Connecting the Future", EuMW 2014 - Conference Proceedings; EuMIC 2014: 9th European Microwave Integrated Circuits Conference, p. 162-165
Paper in proceedings
2014

A high speed power detector for D-band communication

Mingquang Bao, Jingjing Chen, Roman Kozhuharov et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 62 (7), p. 1515 -1523
Journal article
2013

An LC VCO for High Power Millimeter-Wave Signal Generation

Szhau Lai, Dan Kuylenstierna, Rumen Kozhuharov et al
35th IEEE Compound Semiconductor Integrated Circuit Symposium: Integrated Circuits in GaAs, InP, SiGe, GaN and Other Compound Semiconductors, CSICS 2013, Monterey, United States, 13-16 October 2013
Paper in proceedings
2013

Resource efficient implementation of a 10Gb/s radio receiver baseband in FPGA

Christer Svensson, Zhongxia Simon He, Herbert Zirath et al
Paper in proceedings
2013

Accurate Phase-Noise Prediction for a Balanced Colpitts GaN HEMT MMIC Oscillator

Szhau Lai, Dan Kuylenstierna, Mikael Hörberg et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 61 (11), p. 3916-3926
Journal article
2013

140-220-GHz DHBT Detectors

Vessen Vassilev, Herbert Zirath, Rumen Kozhuharov et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 61 (6), p. 2353-2360
Journal article
2013

A high-gain microstrip grid array antenna on low temperature co-fired ceramic for 60-GHz applications

Bing Zhang, Yueping Zhang, Herbert Zirath
2013 7th European Conference on Antennas and Propagation, EuCAP 2013, p. 103-107
Paper in proceedings
2013

Design and Performance Evaluation of a Time Domain Microwave Imaging System

Xuezhi Zeng, Andreas Fhager, Peter Linner et al
International Journal of Microwave Science and Technology. Vol. 2013, p. Art. no. 735692-
Journal article
2013

A DC Comparison Study Between H-Intercalated and Native epigraphenes on SiC substrates

Michael Winters, Mattias Thorsell, J. ul Hassan et al
Materials Science Forum. Vol. 740-742, p. 129-132
Paper in proceedings
2013

Resource efficient implementation of a 10Gb/s radio receiver baseband in FPGA

Christer Svensson, Zhongxia Simon He, Herbert Zirath et al
Paper in proceedings
2013

A D-band packaged antenna on low temperature co-fired ceramics for wire-bond connection with an indium phosphide power meter

Bing Zhang, Li Wei, Herbert Zirath
ISAP 2013 - Proceedings of the 2013 International Symposium on Antennas and Propagation, p. 637-640
Paper in proceedings
2013

A 31~61 GHz linear transconductance up-conversion mixer with 15 GHz IF-bandwidth

M. Bao, Y. Li, Herbert Zirath
Journal of Logic and Computation, p. 1-3
Conference contribution
2013

Waveguide Bandpass Filters for Millimeter-Wave Radiometers

Vedran Furtula, Herbert Zirath, M. Salewski
Journal of Infrared, Millimeter, and Terahertz Waves. Vol. 34 (12), p. 824-836
Journal article
2013

140-220 GHz Imaging Front-end Based on 250 nm InP/InGaAs/InP DHBT Process

Vessen Vassilev, Herbert Zirath, Vedran Furtula et al
Journal of Logic and Computation. Vol. 8715
Paper in proceedings
2013

A temperature dependent measurement of the carrier velocity vs. electric field characteristic for as-grown and H-intercalated epitaxial graphene on SiC

Michael Winters, J. Hassan, Herbert Zirath et al
Journal of Applied Physics. Vol. 113 (19)
Journal article
2013

Integrated wideband and low phase-noise signal source using two voltage-controlled oscillators and a mixer

Szhau Lai, Mingquang Bao, Dan Kuylenstierna et al
IET Microwaves, Antennas and Propagation. Vol. 7 (2), p. 123-130
Journal article
2013

Microwave based diagnostics and treatment in practice

Mikael Persson, Andreas Fhager, Hana Dobsicek Trefna et al
Paper in proceedings
2012

A 20 GHz Low Phase Noise Signal Source Using VCO and Mixer in InGaP/GaAs HBT

Szhau Lai, Mingquang Bao, Dan Kuylenstierna et al
2012 IEEE Compound Semiconductor Integrated Circuit Symposium, CSICS 2012, La Jolla, CA, 14 - 17 October 2012, p. Art. no. 6340056-
Paper in proceedings
2012

A method to lower VCO phase noise by using HBT darlington pair

Szhau Lai, M. Bao, Dan Kuylenstierna et al
Journal of Logic and Computation
Paper in proceedings
2012

Multifunction low noise millimeterwave MMICs for remote sensing

Herbert Zirath, Vessen Vassilev, Morteza Abbasi et al
Journal of Logic and Computation
Paper in proceedings
2012

Highly integrated E-band direct conversion receiver

Mattias Ferndahl, Marcus Gavell, Morteza Abbasi et al
2012 IEEE Compound Semiconductor Integrated Circuit Symposium, CSICS 2012, La Jolla, CA, 14 - 17 October 2012
Paper in proceedings
2012

A 14 Gbps On-/Off- Keying Modulator in GaAs HBT Technology

Zhongxia Simon He, Thomas Swahn, Yinggang Li et al
IEEE Microwave and Wireless Components Letters. Vol. 22 (5), p. 272-274
Journal article
2012

An ultrawideband microwave medical diagnostic system: Design considerations and system performance

Xuezhi Zeng, Andreas Fhager, Mikael Persson et al
Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012. Prague, 26-30 March 2012, p. 3664-3668
Paper in proceedings
2012

10 Gbps 16QAM transmission over a 70/80 GHz (E-band) radio test-bed

Jingjing Chen, Zhongxia Simon He, Lei Bao et al
European Microwave Week 2012: "Space for Microwaves", EuMW 2012, Conference Proceedings - 7th European Microwave Integrated Circuits Conference, EuMIC 2012, p. 556-559
Paper in proceedings
2012

Influence of Large-Aspect-Ratio Surface Roughness on Electrical Characteristics of AlGaN/AlN/GaN HFETs

Martin Fagerlind, I. Booker, P. Bergman et al
IEEE Transactions on Device and Materials Reliability. Vol. 12 (3), p. 538-546
Magazine article
2012

Design of Low Phase-Noise Oscillators and Wideband VCOs in InGaP HBT Technology

Dan Kuylenstierna, Szhau Lai, M. Q. Bao et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 60 (11), p. 3420-3430
Magazine article
2012

H-band MMIC amplifiers in 250 nm InP DHBT

Klas Eriksson, Vessen Vassilev, Herbert Zirath
19th International Conference on Microwaves, Radar and Wireless Communications, MIKON 2012, Warsaw, 21-23 May 2012. Vol. 2, p. 744-747
Paper in proceedings
2012

A method to lower VCO phase noise by using HBT darlington pair

Szhau Lai, M. Bao, Dan Kuylenstierna et al
Journal of Logic and Computation
Paper in proceedings
2012

A 20 GHz Low Phase Noise Signal Source Using VCO and Mixer in InGaP/GaAs HBT

Szhau Lai, Mingquang Bao, Dan Kuylenstierna et al
2012 IEEE Compound Semiconductor Integrated Circuit Symposium, CSICS 2012, La Jolla, CA, 14 - 17 October 2012, p. Art. no. 6340056-
Paper in proceedings
2012

Cryogenic 0.5-13 GHz low noise amplifier with 3 K mid-band noise temperature

Joel Schleeh, Niklas Wadefalk, Per-Åke Nilsson et al
Journal of Logic and Computation
Paper in proceedings
2012

340 GHz Integrated Receiver in 250 nm InP DHBT Technology

Yu Yan, Yogesh Karandikar, Sten Gunnarsson et al
IEEE Transactions on Terahertz Science and Technology. Vol. 2 (3), p. 306-314
Journal article
2012

A W-and G-band MMIC source using InP HBT technology

Rumen Kozhuharov, M. Bao, Marcus Gavell et al
Journal of Logic and Computation, p. 1 - 3
Paper in proceedings
2012

Compact integration of sub-harmonic resistive mixer with differential double slot antenna in G-band using 50nm InP-HEMT MMIC process

Yogesh Karandikar, Herbert Zirath, Yu Yan et al
2012 IEEE Compound Semiconductor Integrated Circuit Symposium, CSICS 2012, La Jolla, CA, 14 - 17 October 2012
Paper in proceedings
2012

Design, Fabrication, and Reliability of Low-Cost Flip-Chip-On-Board Package for Commercial Applications up to 50 GHz

L. H. Hsu, C. W. Oh, W. C. Wu et al
IEEE Transactions on Components, Packaging and Manufacturing Technology. Vol. 2 (3), p. 402-409
Journal article
2012

Ultralow-Power Cryogenic InP HEMT With Minimum Noise Temperature of 1 K at 6 GHz

Joel Schleeh, Göran Alestig, John Halonen et al
IEEE Electron Device Letters. Vol. 33 (5), p. 664-666
Journal article
2012

Linearity improvement using a modified derivative superposition method in cascaded stages amplifier

Jian Zhang, Herbert Zirath, V. Fusco
IET Microwaves, Antennas and Propagation. Vol. 6 (8), p. 922-928
Journal article
2011

A varactor model including valanche noise source for VCOs phase noise simulation

Szhau Lai, Dan Kuylenstierna, Iltcho Angelov et al
41th European Microwave Conference , Manchester, UK, Oct 10-13, 2011, p. 591-594
Paper in proceedings
2011

Single-Chip 220-GHz Active Heterodyne Receiver and Transmitter MMICs With On-Chip Integrated Antenna

Morteza Abbasi, Sten Gunnarsson, Niklas Wadefalk et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 59 (2), p. 466-478
Journal article
2011

Direct carrier quadrature modulator and Demodulator MMICs for 60 GHz gigabit wireless communications

Morteza Abbasi, Torgil Kjellberg, Sten Gunnarsson et al
Asia-Pacific Microwave Conference Proceedings (APMC 2011; Melbourne, VIC; 5 - 8 December 2011), p. 1134-1137
Conference contribution
2011

Experimental Investigation of the Accuracy of an Ultrawideband Time-Domain Microwave-Tomographic System

Xuezhi Zeng, Andreas Fhager, Peter Linner et al
IEEE Transactions on Instrumentation and Measurement. Vol. 60 (12), p. 3939-3949
Journal article
2011

A direct conversion quadrature transmitter with digital interface in 45 nm CMOS for high-speed 60 GHz communications

Morteza Abbasi, Torgil Kjellberg, A. de Graauw et al
Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium. Baltimore, 5-7 June 2011
Paper in proceedings
2011

Integrated front-ends up to 200 GHz

Vessen Vassilev, Niklas Wadefalk, Morteza Abbasi et al
2011 IEEE MTT-S International Microwave Workshop on Millimeter Wave Integration Technologies, IMWS 2011, Sitges, 15 September 2011 through 16 September 2011, p. 57-60
Paper in proceedings
2011

An FPGA-based 5 Gbit/s D-QPSK modem for E-band point-to-point radios

Zhongxia Simon He, Wen Wu, Jingjing Chen et al
14th European Microwave Week 2011: "Wave to the Future", EuMW 2011 - 41st EuropeanMicrowave Conference, EuMC 2011, Manchester, 10 October 2011 through 13 October 2011, p. 690-692
Paper in proceedings
2011

A 53 GHz single chip receiver for geostationary atmospheric measurements

Marcus Gavell, Mattias Ferndahl, Sten Gunnarsson et al
33rd IEEE Compound Semiconductor Integrated Circuit Symposium: Integrated Circuits in GaAs, InP, SiGe, GaN and Other Compound Semiconductors, CSICS 2011, Waikoloa, 16-19 October 2011
Paper in proceedings
2011

Accuracy Evaluation of Ultrawideband Time Domain Systems for Microwave Imaging

Xuezhi Zeng, Andreas Fhager, Mikael Persson et al
IEEE Transactions on Antennas and Propagation. Vol. 59 (11), p. 4279-4285
Journal article
2011

Monolithically Integrated 200-GHz Double-Slot Antenna and Resistive Mixers in a GaAs-mHEMT MMIC Process

Yu Yan, Yogesh Karandikar, Sten Gunnarsson et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 59 (10), p. 2494-2503
Journal article
2011

Accuracy investigation of an ultra-wideband time domain microwave imaging system

Xuezhi Zeng, Andreas Fhager, Peter Linner et al
Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011. Rome, 11-15 April 2011, p. 1928-1932
Paper in proceedings
2011

An NLOS-capable 60 GHz MIMO demonstrator: System concept & performance

Wilhelm Keusgen, Andreas Kortke, Leszek Koschel et al
2011 IEEE 9th International New Circuits and Systems Conference, NEWCAS 2011; Bordeaux; 26 June 2011 through 29 June 2011, p. 265-268
Paper in proceedings
2011

An FPGA-based 5Gbit/s D-QPSK modem for E-band point-to-point radios

Zhongxia Simon He, Wen Wu, Jingjing Chen et al
Paper in proceedings
2011

Varactor-Based Dynamic Load Modulation of RF PAs

Hossein Mashad Nemati, Björn Almgren, Christer Andersson et al
Conference contribution
2011

Broadband Gm-boosted differential HBT doublers with transformer balun

J. Zhang, Herbert Zirath
IET Seminar Digest. Active RF Devices, Circuits and Systems Seminar, 12 September 2011. Vol. 2011 (6), p. 29-32
Paper in proceedings
2011

Progress in clinical diagnostics and treatment with electromagnetic fields

Andreas Fhager, Xuezhi Zeng, Tonny Rubaek et al
Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011. Rome, 11-15 April 2011, p. 1936-1937
Paper in proceedings
2011

Broadband Gm-Boosted Differential HBT Doublers With Transformer Balun

J. Zhang, M. Q. Bao, Dan Kuylenstierna et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 59 (11), p. 2953-2960
Magazine article
2011

A SiC Varactor With Large Effective Tuning Range for Microwave Power Applications

Christer Andersson, Niclas Ejebjörk, Anne Henry et al
IEEE Electron Device Letters. Vol. 32 (6), p. 788-790
Journal article
2011

Passivation of InGaAs/InAlAs/InP HEMTs using Al2O3 atomic layer deposition

Joel Schleeh, John Halonen, Bengt Nilsson et al
Conference Proceedings - International Conference on Indium Phosphide and Related Materials. 2011 Compound Semiconductor Week and 23rd International Conference on Indium Phosphide and Related Materials, CSW/IPRM 2011, Berlin, 22-26 May 2011
Paper in proceedings
2011

Optimization of SiC MESFET for high power and high frequency applications

Niclas Ejebjörk, Herbert Zirath, Peder Bergman et al
Materials Science Forum. Vol. 679-680, p. 629-632
Paper in proceedings
2011

24 GHz balanced self-oscillating mixer with integrated patch antenna array

Yu Yan, Yogesh Karandikar, Sten Gunnarsson et al
2011 European Microwave Conference (EuMC), p. 404-407
Paper in proceedings
2011

A SiC Varactor With Large Effective Tuning Range for Microwave Power Applications

Christer Andersson, Niclas Ejebjörk, Anne Henry et al
IEEE Electron Device Letters. Vol. 32 (6), p. 788-790
Journal article
2011

Accuracy Evaluation of Ultrawideband Time Domain Systems for Microwave Imaging

Xuezhi Zeng, Andreas Fhager, Mikael Persson et al
IEEE Transactions on Antennas and Propagation. Vol. 59 (11), p. 4279-4285
Journal article
2011

Experimental Investigation of the Accuracy of an Ultrawideband Time-Domain Microwave-Tomographic System

Xuezhi Zeng, Andreas Fhager, Peter Linner et al
IEEE Transactions on Instrumentation and Measurement. Vol. 60 (12), p. 3939-3949
Journal article
2011

An X-band low phase noise AlGaN-GaN-HEMT MMIC push-push oscillator

Herbert Zirath, Szhau Lai, Dan Kuylenstierna et al
33rd IEEE Compound Semiconductor Integrated Circuit Symposium: Integrated Circuits in GaAs, InP, SiGe, GaN and Other Compound Semiconductors, CSICS 2011, Waikoloa, 16-19 October 2011
Paper in proceedings
2010

High Efficiency Transmitter Using Varactor Based Dynamic Load Modulation

Christian Fager, Haiying Cao, Thomas Eriksson et al
IEEE International Microwave Workshop Series on “RF Front-ends for Software Defined and Cognitive Radio Solutions”, p. 37-40
Paper in proceedings
2010

Gm-boosted balanced Colpitts compared to conventional balanced Colpitts and cross-coupled VCOs in InGaP HBT technology

Szhau Lai, Dan Kuylenstierna, Iltcho Angelov et al
Asia-Pacific Microwave Conference Proceedings, APMC, Yokohama; 7 December through 10 December, p. 386-389
Paper in proceedings
2010

Flip-chip assembled 7 GHz ultra-low phase-noise InGaP HBT oscillator

Li-Han Hsu, Dan Kuylenstierna, Herbert Zirath et al
Paper in proceedings
2010

MMIC-Based Components for MM-Wave Instrumentation

Vessen Vassilev, Niklas Wadefalk, Rumen Kozhuharov et al
IEEE Microwave and Wireless Components Letters. Vol. 20 (10), p. 578-580
Magazine article
2010

A highly efficient 3.5 GHz inverse class-F GaN HEMT power amplifier

Paul Saad, Christian Fager, Hossein Mashad Nemati et al
International Journal of Microwave and Wireless Technologies. Vol. 2 (3-4), p. 317-324
Journal article
2010

Evaluation of a GaN HEMT transistor for load- and supply-modulation applications using intrinsic waveform measurements

Hossein Mashad Nemati, Alan L. Clarke, Steve C. Cripps et al
Journal of Logic and Computation, p. 509-512
Paper in proceedings
2010

A 210 GHz radar system for 3D stand-off detection

Jan Svedin, Staffan Rudner, Gunnar Thordarsson et al
GigaHertz Symposium 2010, p. 71-
Paper in proceedings
2010

Power detectors and envelope detectors in mHEMT MMIC-technology for millimeterwave applications

Herbert Zirath, Zhongxia Simon He
European Microwave Week 2010: Connecting the World, EuMIC 2010 - Conference Proceedings, p. 353-356
Paper in proceedings
2010

Clinical Diagnostics and Treatment with Electromagnetic Fields

Andreas Fhager, Hana Dobsicek Trefna, Xuezhi Zeng et al
4th European Conference on Antennas and Propagation, EuCAP 2010; Barcelona; Spain; 12 April 2010 through 16 April 2010, p. C15P2-1
Paper in proceedings
2010

A Novel FPGA-based 2.5Gbps D-QPSK Modem for High Capacity Microwave Radios

Zhongxia Simon He, J. J. Chen, Yinggang Li et al
IEEE International Conference on Communications, 2010.May, Cape Town, South Africa, p. Art. no. 5501842-
Paper in proceedings
2010

A linear 70-95 GHz differential IQ modulator for E-band wireless communication

Marcus Gavell, Herbert Zirath, Mattias Ferndahl et al
Journal of Logic and Computation, p. 788-791
Conference contribution
2010

The Herschel-Heterodyne Instrument for the Far-Infrared (HIFI)

T. de Graauw, F. P. Helmich, T. G. Phillips et al
Astronomy and Astrophysics. Vol. 518 (7-8)
Journal article
2010

Low-phase noise InGaP HBT VCO design

Dan Kuylenstierna, Herbert Zirath, Rumen Kozhuharov et al
Paper in proceedings
2010

Design of a Highly Efficient 2–4-GHz Octave Bandwidth GaN-HEMT Power Amplifier

Paul Saad, Christian Fager, Haiying Cao et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 58 (7), p. 1677-1685
Journal article
2010

MMIC-based receivers for mm-wave radiometry

Vessen Vassilev, Niklas Wadefalk, Rumen Kozhuharov et al
Conference contribution
2010

Flip-Chip-Based Multichip Module for Low Phase-Noise V -Band Frequency Generation

Li-Han Hsu, Dan Kuylenstierna, Rumen Kozhuharov et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 58 (9), p. 2408-2419
Magazine article
2010

A fundamental upconverting Gilbert mixer for 100 GHz wireless applications

Marcus Gavell, Mattias Ferndahl, Herbert Zirath et al
Compound Semiconductor Integrated Circuit Symposium (CSICS), 3-6 Oct. 2010, Monterey, CA, p. 1-4
Paper in proceedings
2010

A low noise integrated 0.3-16 GHz differential amplifier for balanced ultra wideband antennas

Niklas Wadefalk, Per-Simon Kildal, Herbert Zirath
2010 32nd IEEE Compound Semiconductor Integrated Circuit Symposium, CSICS 2010, Monterey, CA, United States, 3-6 October 2010, p. Art. no. 5619677-
Conference contribution
2010

Design of Flip-Chip Interconnect Using Epoxy-Based Underfill Up to V-Band Frequencies With Excellent Reliability

Li-Han Hsu, Wei-Cheng Wu, E. Y. Chang et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 58 (8), p. 2244-2250
Magazine article
2010

Evaluation of a GaN HEMT transistor for load- and supply-modulation applications using intrinsic waveform measurements

Hossein Mashad Nemati, Alan L. Clarke, Steve C. Cripps et al
Journal of Logic and Computation, p. 509-512
Paper in proceedings
2010

Electrical Characterization and Transmission Electron Microscopy Assessment of Isolation of AlGaN/GaN High Electron Mobility Transistors with Oxygen Ion Implantation

J. Y. Shiu, C. Y. Lu, T. Y. Su et al
Japanese Journal of Applied Physics. Vol. 49 (2), p. Art. no. 021001-
Journal article
2010

A broadband differential cascode power amplifier in 45 nm CMOS for high-speed 60 GHz system-on-chip

Morteza Abbasi, Torgil Kjellberg, Herbert Zirath et al
2010 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2010; Anaheim, CA; 23 May 2010 through 25 May 2010, p. 978-142446242-1-
Paper in proceedings
2010

Comparison between a time domain and a frequency domain system for microwave tomography

Xuezhi Zeng, Andreas Fhager, Peter Linner et al
Conference contribution
2010

A novel FPGA-based 2.5Gbps DQPSK modem for high capacity microwave radios

Zhongxia Simon He, Jingjing Chen, Yinggang Li et al
Paper in proceedings
2010

An experimental 210 GHz radar system for 3D stand-off detection

Jan Svedin, Staffan Rudner, Gunnar Thordarsson et al
Paper in proceedings
2010

Highly Efficient Dynamic Load Modulation Transmitter

Christian Fager, Hossein Mashad Nemati, Haiying Cao et al
Conference contribution
2010

Design and Fabrication of 0/1-Level RF-Via Interconnect for RF-MEMS Packaging Applications

L. H. Hsu, W. C. Wu, E. Y. Chang et al
IEEE Transactions on Advanced Packaging. Vol. 33 (1), p. 30-36
Journal article
2009

A room temperature HEMT process for AlGaN/GaN heterostructure characterization

Martin Fagerlind, Herbert Zirath, Niklas Rorsman
Semiconductor Science and Technology. Vol. 24 (4), p. 045014-
Journal article
2009

Design, Fabrication, and Characterization of Novel Vertical Coaxial Transitions for Flip-Chip Interconnects

W. C. Wu, E. Y. Chang, R. B. Hwang et al
IEEE Transactions on Advanced Packaging. Vol. 32 (2), p. 362-371
Journal article
2009

I/Q Imbalance Compensation Using a Nonlinear Modeling Approach

Haiying Cao, Ali Soltani Tehrani, Christian Fager et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 57 (3), p. 513-518
Journal article
2009

Low phase noise MMIC oscillators in InGaP HBT technology

Dan Kuylenstierna, Herbert Zirath, Rumen Kozhuharov et al
Microwave Conference, 2008. APMC 2008. Asia-Pacific, Macau, 16-20 Dec. 2008, p. (4 pages)-
Paper in proceedings
2009

High-Efficiency LDMOS Power-Amplifier Design at 1 GHz Using an Optimized Transistor Model

Hossein Mashad Nemati, Christian Fager, Mattias Thorsell et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 57 (7), p. 1647-1654
Journal article
2009

Integrated receivers up to 220 GHz utilizing GaAs-mHEMT technology

Herbert Zirath, Niklas Wadefalk, R. Kuzhuharov et al
2009 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2009; Singapore; Singapore; 9 January 2009 through 11 January 2009, p. 225-228
Paper in proceedings
2009

Design of Varactor-Based Tunable Matching Networks for Dynamic Load Modulation of High Power Amplifiers

Hossein Mashad Nemati, Christian Fager, Ulf Gustavsson et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 57 (5), p. 1110-1118
Journal article
2009

Evaluation of high efficiency PAs for use in supply- and load-modulation transmitters

Christian Fager, Hossein Mashad Nemati, Ulf Gustavsson et al
Paper in proceedings
2009

On the status of Low Noise Millimeterwave MMIC Receivers

Herbert Zirath, Niklas Wadefalk, Rumen Kozhuharov et al
APMC: 2009 ASIA PACIFIC MICROWAVE CONFERENCE. Vol. 1-5, p. 1303-1306
Conference contribution
2009

Single-Chip Frequency Multiplier Chains for Millimeter-Wave Signal Generation

Morteza Abbasi, Rumen Kozhuharov, Camilla Kärnfelt et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 57 (12), p. 3134-3142
Journal article
2009

Dual-Input Nonlinear Modeling for I/Q Modulator Distortion Compensation

Haiying Cao, Ali Soltani Tehrani, Christian Fager et al
Paper in proceedings
2009

An Image Reject Mixer for High-Speed E-band (71-76, 81-86 GHz) Wireless Communication

Marcus Gavell, Mattias Ferndahl, Sten Gunnarsson et al
Compound Semiconductor Integrated Circuit Symposium, Oct. 2009, Greensboro, NC, p. 1-4
Paper in proceedings
2009

A Compact Cascode Power Amplifier in 45-nm CMOS for 60-GHz Wireless Systems

Torgil Kjellberg, Morteza Abbasi, Mattias Ferndahl et al
2009 ANNUAL IEEE COMPOUND SEMICONDUCTOR INTEGRATED CIRCUIT SYMPOSIUM - 2009 IEEE CSIC SYMPOSIUM, TECHNICAL DIGEST 2009, p. 95-98
Paper in proceedings
2009

Accuracy evaluation of time domain measurement systems for microwave tomography

Xuezhi Zeng, Andreas Fhager, Peter Linner et al
Journal of Logic and Computation, p. 1441-1444
Paper in proceedings
2009

A Generic, Multi-Purpose, and Small-Size 60 GHz Transmit/Receive Module used for Secure WLAN Communication

Sten Gunnarsson, Christer Stoij, Camilla Kärnfelt et al
Microwave Conference, 2008. APMC 2008. Asia-Pacific, Macau, 16-20 Dec. 2008, p. paper A1-29 (4 pages)
Paper in proceedings
2009

24 GHz InGaP-GaAs HBT push-push VCO with broadband tuning range

Rumen Kozhuharov, Dan Kuylenstierna, Herbert Zirath
Proceedings of the 4th European Microwave Integrated Circuits Conference, p. 242-245
Paper in proceedings
2009

Design of 50-70 GHz Planar Wideband Bandpass Filter on Liquid Crystal Polymer Substrate

Xia Zhang, Dan Kuylenstierna, Johan Liu et al
Journal of Infrared, Millimeter, and Terahertz Waves. Vol. 30 (2), p. 183-189
Journal article
2009

An E-Band(71-76, 81-86 GHz) Balanced Frequency Tripler for High-Speed Communications

Morteza Abbasi, Marcus Gavell, Mattias Ferndahl et al
APMC: 2009 ASIA PACIFIC MICROWAVE CONFERENCE. Vol. 1-5, p. 1184-1187
Conference contribution
2009

Design of High Efficiency Ka-Band Harmonically Tuned Power Amplifiers

Hossein Mashad Nemati, Mattias Ferndahl, Iltcho Angelov et al
Paper in proceedings
2009

Time Alignment in a Dynamic Load Modulation Transmitter Architecture

Haiying Cao, Ali Soltani Tehrani, Hossein Mashad Nemati et al
Proceedings of the 39th European Microwave Conference, EuMC 2009, Sept. 29-Oct. 1 2009, Rome, p. 1211 - 1214
Paper in proceedings
2009

A Compact Ultra-Wideband Bandpass Filter with Ultra-Fine Conductor Trace based on Liquid Crystal Polymer Substrates

Xia Zhang, Johan Liu, Camilla kärnfeldt et al
Circuit World. Vol. 35 (1), p. 16-21
Journal article
2009

Accuracy evaluation of time domain measurement systems for microwave tomography

Xuezhi Zeng, Andreas Fhager, Peter Linner et al
Journal of Logic and Computation, p. 1441-1444
Paper in proceedings
2008

A G-band (140 – 220 GHz) Microstrip MMIC Mixer operating in both Resistive and Drain-Pumped Mode

Sten Gunnarsson, Niklas Wadefalk, Iltcho Angelov et al
Paper in proceedings
2008

A 220 GHz Single-Chip Receiver MMIC with Integrated Antenna

Sten Gunnarsson, Niklas Wadefalk, Iltcho Angelov et al
IEEE Microwave and Wireless Components Letter. Vol. 18
Journal article
2008

Practical realizations of high efficiency switched mode power amplifiers

Hossein Mashad Nemati, Christian Fager, Ulf Gustavsson et al
Conference contribution
2008

A Compact V-band Planar Wideband Bandpass Filter Based on Liquid Crystal Polymer Substrates

Xia Zhang, Dan Kuylenstierna, Johan Liu et al
Proceedings of the 2nd Electronics Systemintegration Technology Conference, p. 163-167
Paper in proceedings
2008

Influence of oxynitride (SiOxNy) passivation on the microwave performance of AlGaN/GaN HEMTs

Vincent Desmaris, Jin-Yu Shiu, Niklas Rorsman et al
Solid-State Electronics. Vol. 52, p. 632-636
Journal article
2008

Deep submicron CMOS for millimeter wave power applications

Mattias Ferndahl, Hossein Mashad Nemati, Herbert Zirath et al
IEEE Microwave and Wireless Components Letters. Vol. 18 (5)
Journal article
2008

Output Power Density and Breakdown Voltage in Field-Plated Buried Gate Microwave SiC MESFETs

Per-Åke Nilsson, Fredrik Allerstam, Kristoffer Andersson et al
GigaHertz Symposium 2008, p. 78-
Paper in proceedings
2008

Compensation of Transmitter Distortion Using a Nonlinear Modeling Approach

Haiying Cao, Ali Soltani Tehrani, Christian Fager et al
International Workshop on Integrated Nonlinear Microwave and Millimetre-wave Circuits 2008, p. 131-134
Paper in proceedings
2008

A General Statistical Equivalent-Circuit-Based De-Embedding Procedure for High-Frequency Measurements

Mattias Ferndahl, Christian Fager, Kristoffer Andersson et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 56 (12), p. 2692-2700
Journal article
2008

Modeling of dual-input power amplifiers

Thomas Eriksson, Christian Fager, Haiying Cao et al
Conference contribution
2008

Characterization of Switch Mode LDMOS and GaN Power Amplifiers for Optimal Use in Polar Transmitter Architectures

Hossein Mashad Nemati, Christian Fager, Ulf Gustavsson et al
Proc. IEEE International Microwave Symposium, p. 1505 - 1508
Paper in proceedings
2008

A Single-Chip 53 GHz Radiometer Front-End MMIC for Geostationary Atmospheric Measurements

Sten Gunnarsson, Anders Emrich, Herbert Zirath et al
Paper in proceedings
2008

20 GHz Power Amplifier Design in 130 nm CMOS

Mattias Ferndahl, T. Johansson, Herbert Zirath
European Microwave Integrated Circuits Conferance, p. 254-257
Paper in proceedings
2008

An efficiency optimized controlling scheme for dynamic load modulation of power amplifiers

Hossein Mashad Nemati, Christian Fager, Ulf Gustavsson et al
European Microwave Conf., Proc., Oct. 2008, p. 583-586
Paper in proceedings
2008

GaN Device and MMIC development at Chalmers

Martin Fagerlind, Mattias Sudow, Kristoffer Andersson et al
Gigahertz Symposium 2008, Abstract book, p. 86-
Paper in proceedings
2008

An efficiency optimized controlling scheme for dynamic load modulation of power amplifiers

Hossein Mashad Nemati, Christian Fager, Ulf Gustavsson et al
European Microwave Conf., Proc., Oct. 2008, p. 583-586
Paper in proceedings
2008

An efficiency optimized controlling scheme for dynamic load modulation of power amplifiers

Hossein Mashad Nemati, Christian Fager, Ulf Gustavsson et al
European Microwave Conf., Proc., Oct. 2008, p. 583-586
Paper in proceedings
2008

Influence of gate position on dispersion characteristics of GaN HEMTs

Martin Fagerlind, Herbert Zirath, Urban Forsberg et al
WOCSDICE 2008, Abstract book, p. 99-100
Paper in proceedings
2008

Terahertz technology and applications

Jan Stake, Herbert Zirath, Aik-Yean Tang et al
Conference contribution
2008

Voltage/Current mode class D amplifiers and their applications

Christian Fager, Hossein Mashad Nemati, Ulf Gustavsson et al
Conference contribution
2008

Comparative analysis of the complexity/accuracy tradeoff for power amplifier behavior models

Ali Soltani Tehrani, Haiying Cao, Thomas Eriksson et al
Conference contribution
2008

A 220 GHz (G-band) Microstrip MMIC Single-Ended Resistive Mixer

Sten Gunnarsson, Niklas Wadefalk, Iltcho Angelov et al
IEEE Microwave and Wireless Components Letter. Vol. vol. 18, no. 3
Journal article
2008

Development of a 210 GHz near-field measurement radar system based on an antenna-integrated MMIC receiver front-end and an ultra-compact HBV transmitter source module

Jan Svedin, Jan Kjellgren, Staffan Rudner et al
Journal of Logic and Computation. Vol. 7117, p. Art. no. 71170H-
Paper in proceedings
2007

Hydrodynamic Simulations of Unitraveling-Carrier Photodiodes

Syed Rahman, Hans Hjelmgren, Josip Vukusic et al
IEEE Journal of Quantum Electronics. Vol. 43 (11), p. 1088-1094
Journal article
2007

DC and microwave performance of AlGaN/GaN HEMTs passivated with sputtered SiNx

Jin-Yu Shiu, Vincent Desmaris, Niklas Rorsman et al
Semicronductor Science and Technology. Vol. 22, p. 717-721
Journal article
2007

Newly developed chip sets for 60 GHz radio communication systems

Herbert Zirath, Mattias Ferndahl, Rumen Kozhuharov et al
IEEE International Workshop on Radio-Frequency Integration Technology, RFIT 2007; Singapore; Singapore; 9 December 2007 through 11 December 2007, p. 102-106
Paper in proceedings
2007

Low phase-noise balanced Colpitt InGaP-GaAs HBT VCOs with wide frequency tuning range and small VCO-gain variation

Herbert Zirath
IEEE Asia Pacific Microwave Conference 2007 (3), p. 1861-1864
Paper in proceedings
2007

A 60 GHz Compact Single-Chip Sub-Harmonically Pumped Receiver MMIC

Sten Gunnarsson, Mattias Ferndahl, Herbert Zirath
Paper in proceedings
2007

Design of highly efficient, high output power, L-band class D-1 RF power amplifiers using GaN MESFET devices

Ulf Gustavsson, T. Lejon, Christian Fager et al
Proc. European Conference on Wireless Technologies, p. 371-374
Paper in proceedings
2007

Design and Fabrication of 4H-SiC RF MOSFETs

Gudjon Gudjonsson, Fredrik Allerstam, Einar Sveinbjörnsson et al
IEEE Transactions on Electron Devices. Vol. 54 (12), p. 3138-3145
Journal article
2007

High Frequency 4H-SiC MOSFETs

Gudjon Gudjonsson, Fredrik Allerstam, Per-Åke Nilsson et al
Materials Science Forum. Vol. 556-557, p. 795-798
Paper in proceedings
2007

Single stage CMOS Power Amplifier at 23 GHz

Hossein Mashad Nemati, Mattias Ferndahl, Christian Fager et al
Conference contribution
2007

Analysis and Design of Millimeter-Wave FET-Based Image Reject Mixers

Sten Gunnarsson, Dan Kuylenstierna, Herbert Zirath
IEEE Trans. Microwave Theory Tech.. Vol. 55 (10), p. 2065 - 2074
Journal article
2007

Oxygen Ion Implantation Isolation Planar Process for AlGaN/GaN HEMTs

Jin-Yu Shiu, Jui-Chien Huang, Vincent Desmaris et al
IEEE Electron Device Letters. Vol. 28 (6), p. 476-478
Journal article
2007

60 GHz broadband 0=1-level RF-via interconnect for RF-MEMS packaging

W.C. Wu, L. H. Hsu, E. Y. Chang et al
Electronics Letters. Vol. 43 (22, Oct. 25)
Journal article
2007

Analysis and Design of Millimeter-Wave FET-Based Image Reject Mixers

Sten Gunnarsson, Dan Kuylenstierna, Herbert Zirath
IEEE Trans. Microwave Theory Tech.. Vol. 55 (10), p. 2065 - 2074
Journal article
2007

60 GHz Broadband MS-to-CPW Hot-Via Flip Chip Interconnects

W.-C. Wu, L.-H. Hsu, E.Y. Chang et al
Microwave and Wireless Components Letters, IEEE. Vol. 17 (11, Nov. 2007), p. 784-786
Journal article
2007

Integrated Front-ends for Millimeterwave Applications Using III-V Technologies

Herbert Zirath, Sten Gunnarsson, Camilla Kärnfelt et al
Proceedings of AACD, 16th Workshop on Advances in Analogue Circuit Design, p. 347-362
Paper in proceedings
2007

Realization of A Ultra Wideband BPF based on LCP Substrate for Wireless Application

Xia Zhang, Herbert Zirath, Johan Liu
Paper in proceedings
2007

Capacitor

Spartak Gevorgian, Thomas Lewin, Herbert Zirath et al
Patent application
2007

60 GHz Single-Chip Front-End MMICs and Systems for Multi-Gbps Wireless Communication

Sten Gunnarsson, Camilla Kärnfelt, Herbert Zirath et al
IEEE Journal of Solid-State Circuits. Vol. 42 (5), p. 1143 - 1157
Journal article
2007

Coaxial transitions for CPW-to-CPW flip chip interconnects

W. C. Wu, E. Y. Chang, C. H. Huang et al
Electronics Letters. Vol. 43 (17, Aug. 16), p. 929-930
Journal article
2007

High Efficiency Modulation of Switched Mode LDMOS Power Amplifiers

Christian Fager, Ulf Gustavsson, Hossein Mashad Nemati et al
Paper in proceedings
2006

Comparative investigation between a single ended and a balanced IF VGA

M. Anowar Masud, Herbert Zirath
Proceedings of the 36th European Microwave Conference, Manchester, UK, 2006, p. 220-223
Paper in proceedings
2006

A Reliable K-band Sub-harmonic Mixer for Satellite Converters

Herbert Zirath, Andreas Ådahl
Paper in proceedings
2006

A 60 GHz MMIC Double Balanced Gilbert Mixer in mHEMT technology with Integrated RF, LO, and IF Baluns

Sten Gunnarsson, Marcus Gavell, Dan Kuylenstierna et al
IEE Electronics Letters. Vol. 42 (24), p. 1402-1403
Journal article
2006

A 45 dB Variable Gain Low Noise MMIC Amplifier

M. Anowar Masud, Herbert Zirath, Matthew Kelly
IEEE Transactions on Microwave Theory and Techniques. Vol. 54 (6-2), p. 2848-2855
Journal article
2006

Integration of components in a 50-nm pseudomorphic In0.65Ga0.35As-In0.40Al0.60As-InP HEMT MMIC technology

Mikael Malmkvist, Anders Mellberg, Niklas Rorsman et al
Solid State Electronics. Vol. 50 (5), p. 858-864
Journal article
2006

Residual and oscillator phase noise in GaAs metamorphic HEMTs

Mattias Ferndahl, Herbert Zirath
Journal article
2006

High channel mobility 4H-SiC MOSFETs

Einar Sveinbjörnsson, Gudjon Gudjonsson, Fredrik Allerstam et al
Materials Science Forum. Vol. 527-529, p. 961-966
Paper in proceedings
2006

High Purity 60 GHz-Band Single Chip

Camilla Kärnfelt, Rumen Kozhuharov, Herbert Zirath et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 54 (6), p. 2887-2898
Journal article
2006

An SiC MESFET-based MMIC process

Mattias Sudow, Kristoffer Andersson, Niklas Billström et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 54 (12, Part 1), p. 4072-4078
Journal article
2006

Multifunctional MMIC design and antenna integration

Camilla Kärnfelt, Sten Gunnarsson, Herbert Zirath et al
Abstract book WOCSDICE 2006. Vol. 1 (1), p. 109-111
Conference contribution
2006

High Gain Active Microstrip Antenna for 60 GHz WPAN/WLAN Applications

Camilla Kärnfelt, Paul Hallbjörner, Herbert Zirath et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 54 (6), p. 2593-2603
Journal article
2006

High Efficiency LDMOS Current Mode Class-D Power amplifier at 1 GHz

Hossein Mashad Nemati, Christian Fager, Herbert Zirath
36th European Microwave Conference. Vol. 1 (1), p. 176-9
Paper in proceedings
2006

Large-Signal Modelling and Comparison of AlGaN/GaN HEMTs and SiC MESFETs

Iltcho Angelov, Kristoffer Andersson, D Schreuers et al
IEEE Asia PAcific Microwave Conference, 2006, Yokohama, Japan, p. 279-282
Paper in proceedings
2006

SiC MESFET with a Double Gate Recess

Per-Åke Nilsson, Niklas Rorsman, Mattias Sudow et al
Materials Science Forum. Vol. 527-529, p. 1227-1230
Paper in proceedings
2006

High power-density 4H-SiC RF MOSFETs

Gudjon Gudjonsson, Fredrik Allerstam, Halldor Olafsson et al
Materials Science Forum. Vol. 527-529, p. 1277-1280
Paper in proceedings
2006

Single-Chip 60 GHz Transmitter and Receiver MMICs in a GaAs mHEMT Technology

Sten Gunnarsson, Camilla Kärnfelt, Herbert Zirath et al
Proceedings of IEEE MTT-S International Microwave Symposium, 11-16 June, 2006, p. 801-804
Paper in proceedings
2006

Development of 60 GHz front end circuits for high data rate communication systems at Chalmers University

Herbert Zirath, Mattias Ferndahl, Rumen Kozhuharov et al
Chung-kuo Kung Cheng Hsueh Kan/Journal of the Chinese Institute of Engineers. Vol. 29 (7), p. 1173-1183
Journal article
2006

Growth of Fe doped semi-insulating GaN on sapphire and 4H-SiC by MOCVD

Mariusz Rudzinski, Vincent Desmaris, P Van Hal et al
Physica Status Solidi C. Vol. 6, p. 2231-6
Journal article
2006

Comparison of the DC and microwave performance of AlGaN/GaN HEMTs grown on SiC by MOCVD with Fe-doped or unintentionally doped GaN buffer layers

Vincent Desmaris, Mariusz Rudzinski, Niklas Rorsman et al
IEEE Transactions on Electron Devices. Vol. 53 (9), p. 2413-17
Journal article
2006

CMOS devices and circuits for microwave and millimeter wave applications

Herbert Zirath, Mattias Ferndahl, Bahar M. Motlagh et al
Paper in proceedings
2006

High Power Density 4H-SiC RF MOSFETs

Gudjon Gudjonsson, Fredrik Allerstam, Halldor Olafsson et al
IEEE Electron Device Letters. Vol. 27 (6), p. 469-471
Journal article
2006

Single-Chip 24-GHz Synthesizer for a Radar Application

Rumen Kozhuharov, Anders Jirskog, Niklas Penndal et al
Technical Digest of 2006 IEEE CSIC Symposium San Antonio, TX, USA, p. 205 - 208
Journal article
2006

Transmission electron microscopy assessment of the Si enhancement of Ti/Al/Ni/Au Ohmic contacts to undoped AlGaN/GaN heterostructures

Vincent Desmaris, Jin-Yu Shiu, Chung-Lu Lu et al
Journal of Applied Physics. Vol. 100 (3), p. 34904-1-4-
Journal article
2006

A Load Modulated High Efficiency Power Amplifier

Fabien Lepine, Herbert Zirath, Hendrikus Jos
Paper in proceedings
2006

Fabrication and characterization of field-plated buried-gate SiC MESFETs

Kristoffer Andersson, Mattias Sudow, Per-Åke Nilsson et al
IEEE Electron Device Letters. Vol. 27 (7), p. 573-575
Journal article
2005

Lumped-element quadrature power splitters using mixed right/left-handed transmission lines

Dan Kuylenstierna, Sten Gunnarsson, Herbert Zirath
IEEE Transactions on Microwave Theory and Techniques. Vol. 53 (8), p. 2616-21
Journal article
2005

DC and RF performance of MESFET mode 4H-SiC Static Induction transistor

Dimitar Milkov Dochev, Kristina Dynefors, Vincent Desmaris et al
Paper in proceedings
2005

Integrated microstrip array antenna and amplifier at 60 GHz

Paul Hallbjörner, Camilla Kärnfelt, Herbert Zirath et al
Proceedings of GigaHertz 2005. Vol. 1 (1), p. 198-201
Conference contribution
2005

MMIC Mixers based on a novel Zero Bias Diode

Dennis Kleen, Andreas Ådahl, Marino Poppe et al
Conference contribution
2005

[J]. Effect of AlN nucleation layer on the structural properties of bulk GaN grown on sapphire by molecular-beam epitaxy

Stefan Davidsson, Fredrik Fälth, Xinju Liu et al
Journal of applied physics. Vol. 98 (1), p. 16109-
Journal article
2005

CMOS devices and circuits for microwave and millimetre wave applications

Mattias Ferndahl, Bahar M. Motlagh, Anowar Masud et al
13th European Gallium Arsenide Conference, p. 105-8
Paper in proceedings
2005

Vertical scaling of gate-to-channel distance for a 70 nm InP pseudomorphic HEMT technology

Malin Borg, Jan Grahn, Shu Min Wang et al
Proceed. of Conf on InP and Related Materials (IPRM'05), p. 204-207
Paper in proceedings
2005

7 GHz VCO in mHEMT technology with study of device flicker noise

Mattias Ferndahl, Herbert Zirath
Journal article
2005

The Chalmers microstrip SiC MMIC Process

Mattias Sudow, Kristoffer Andersson, Per-Åke Nilsson et al
Paper in proceedings
2005

MMICs for micro and millimetre wave applications

Mattias Ferndahl, Bahar M. Motlagh, Anowar Masud et al
Journal article
2005

’Development of 60-GHz front-end circuits for a high-data-rate communication system

Herbert Zirath, Rumen Kozhuharov, Mattias Ferndahl
IEEE Journal of Solid-State Circuits. Vol. 40 (10), p. 2077-2086
Journal article
2005

High field effect mobility in n-channel Si face 4H-SiC MOSFETs with gate oxide grown on aluminum ion-implanted material

Gudjon Gudjonsson, Halldor Olafsson, Fredrik Allerstam et al
IEEE Electron Device Letters. Vol. 26 (2), p. 96-98
Journal article
2005

On the large-signal modelling of AlGaN/GaN HEMTs and SiC MESFETs

Iltcho Angelov, Vincent Desmaris, Kristina Dynefors et al
Paper in proceedings
2005

Broadband 7 GHz VCO in mHEMT Technology

Mattias Ferndahl, Herbert Zirath
Asia Pacific Microwave Conference 2005. Vol. 5, p. 689-
Journal article
2005

Fabrication of high power-density SiC MOSFETs

Gudjon Gudjonsson, Fredrik Allerstam, Halldor Olafsson et al
Conference contribution
2005

A 60 GHz MMIC pHEMT Image Reject Mixer with Integrated Ultra Wideband IF Hybrid and 30 dB of Image Rejection Ratio

Sten Gunnarsson, Dan Kuylenstierna, Herbert Zirath
Conference contribution
2005

A high purity 60 GHz single chip X8 multiplier with low phase noise

Camilla Kärnfelt, Rumen Kozhuharov, Herbert Zirath
Proceedings of Europeean Microwave Week, GAAS 2005. Vol. 1 (1), p. 253-256
Conference contribution
2005

Understanding and accurate modelling of nonlinear LDMOS transistor dc characteristics

Christian Fager, K.-H. Eklund, Herbert Zirath
GigaHertz 2005. Vol. 1 (1), p. 181-4
Paper in proceedings
2005

High Gain Active Microstrip Antenna for 60 GHz WLAN

Camilla Kärnfelt, Paul Hallbjörner, Herbert Zirath et al
Proceedings of European Microwave week, EuMC 2005. Vol. 1 (1), p. 581-584
Conference contribution
2005

Growth of Fe doped semi-insulating GaN on sapphire and 4H-SiC by MOCVD

Mariusz Rudzinski, Vincent Desmaris, Paul Van Hal et al
Paper in proceedings
2005

Single-Chip 60 GHz Transmitter and Receiver MMICs for Very High Speed (several Gigabit/s) Wireless Transmission

Sten Gunnarsson, Camilla Kärnfelt, Herbert Zirath et al
Conference contribution
2005

Balanced Colpitt Oscillator MMICs Designed for Ultra-Low Phase Noise

Herbert Zirath, Rumen Kozhuharov, Mattias Ferndahl
Journal of Solid State Circuits. Vol. 40 (10), p. 2077-89
Journal article
2005

Fully Integrated 60-GHz Single-Ended Resistive Mixer in 90-nm CMOS Technology

Bahar M. Motlagh, Sten Gunnarsson, Mattias Ferndahl et al
Microwave and Wireless Components Letters, IEEE. Vol. 16 (1), p. 25-27
Journal article
2005

High-Q Fringing-Field-Enhanced capacitors(FFE) for deep submicron Silicon-MMICs

Bahar M. Motlagh, Spartak Gevorgian, Herbert Zirath
Proceedings of the Europian Microwave Association. Vol. 01 (01), p. 25-27
Journal article
2005

Highly Integrated 60 GHz Transmitter and Receiver MMICs in a GaAs pHEMT Technology

Sten Gunnarsson, Camilla Kärnfelt, Herbert Zirath et al
Journal article
2005

Planar Schottky Microwave Diodes on 4H-SiC

Mattias Sudow, Niklas Rorsman, Per-Åke Nilsson et al
Materials Science Forum. Vol. 483-485, p. 937-940
Paper in proceedings
2005

MMICs for Micro and Millimeterwave applications in a 90 nm CMOS technology

Herbert Zirath, Mattias Ferndahl, Bahar M. Motlagh et al
Microwave Workshops and Exhibition, MWE 2005. Vol. 2005, p. WS17-02
Paper in proceedings
2005

InGaAs-InAlAs-InP HEMT technology for ultra-high frequency and ultra-low noise performance

Jan Grahn, Piotr Starski, Mikael Malmkvist et al
Proceed. of Conf on InP and Related Materials (IPRM'05), p. 124-128
Paper in proceedings
2005

L-Band LDMOS Power Amplifiers Based on an Inverse Class-F Architecture

Fabien Lepine, Andreas Ådahl, Herbert Zirath
IEEE Transactions on Microwave Theory and Techniques. Vol. 53 (6), p. 2007-2012
Journal article
2005

THz Nanoelectronics

Jan Stake, Herbert Zirath
Paper in proceedings
2005

MMIC-Oscillator designs for ultra low phase noise

Herbert Zirath, Harald Jacobsson, Ming X Bao
Paper in proceedings
2005

V-band Single Chip Mutipliers.

Rumen Kozhuharov, Camilla Kärnfelt, Herbert Zirath
GigaHertz 2005, p. 230-233
Conference poster
2005

4-8 GHz Low Noise Amplifier using Metamorphic HEMT Technology

Matthew Kelly, Iltcho Angelov, Piotr Starski et al
Conference contribution
2004

Low-resistance Si/Ti/Al/Ni/Au multilayer ohmic contacts to undoped AlGaN/GaN heterostructures

Vincent Desmaris, Joakim Eriksson, Niklas Rorsman et al
Electrochemical and Solid-State Letters. Vol. 7 (4), p. G72-
Journal article
2004

Development of 60-GHz Front -End Circuits for a High-Data-Rate Communication System.

Herbert Zirath, Toru Masuda, Rumen Kozhuharov et al
IEEE Journal of Solid-State Circuits. Vol. 39 (10), p. 1640-1649
Journal article
2004

A 50-nm gate length InP pseudomorphic HEMT implemented in an MMIC broadband feedback amplifier

Mikael Malmkvist, Anders Mellberg, Jan Grahn et al
16th International Conference on Indium Phosphide and Related Materials, p. 386-388
Paper in proceedings
2004

High CW power 0.3 um gate AlGaN/GaN HEMTs grown by MBE on sapphire

Vincent Desmaris, Joakim Eriksson, Niklas Rorsman et al
Materials Science Forum. Vol. 457-460 (2), p. 1629-
Paper in proceedings
2004

High CW power 0.3 um gate AlGaN/GaN HEMTs grown by MBE on sapphire

Vincent Desmaris, Joakim Eriksson, Niklas Rorsman et al
Materials Science Forum. Vol. 457-460 (2), p. 1629-
Paper in proceedings
2004

Fabrication and characterization of reactively sputtered TaN thin film resistors for millimeter wave applications

Anders Mellberg, Samuel P. Nicols, Niklas Rorsman et al
Electrochemical and Solid State Letters. Vol. 7 (11), p. G261-3
Journal article
2004

90 nm CMOS MMIC amplifier

M. Anowar Masud, Herbert Zirath, Mattias Ferndahl et al
Radio Frequency Integrated Circuits (RFIC) Symposium, 2004. Digest of Papers. 2004 IEEE, p. 201 - 204
Paper in proceedings
2004

Planar SiC Schottky Diodes for MMIC Applications

Mattias Sudow, Niklas Rorsman, Per-Åke Nilsson et al
Conference Proceedings. 34th European Microwave Conference (IEEE Cat. No.04EX963). Vol. 1, p. 153-156
Journal article
2004

Statistical Estimation of small signal FET model parameters and their covariance

Kristoffer Andersson, Christian Fager, Peter Linner et al
Paper in proceedings
2004

CMOS MMICs for microwave and millimeter wave applications

Mattias Ferndahl, Herbert Zirath, Bahar M. Motlagh et al
IEEE-MIKON Int. Conf. on Microwaves, Radar and Wireless Communications. Vol. 1, p. 237-248
Paper in proceedings
2004

40 and 60 GHz frequency doublers in 90-nm CMOS

Mattias Ferndahl, Bahar M. Motlagh, Herbert Zirath
IEEE MTT-S Int. Microwave Symp. Dig.. Vol. 1, p. 179-182
Paper in proceedings
2004

A comprehensive analysis of IMD behavior in RF CMOS power amplifiers

Christian Fager, Jose C. Pedro, Nuno Carvalho et al
IEEE Journal of Solid-State Circuits. Vol. 39 (1), p. 24-34
Journal article
2004

Cryogenic 2--4 GHz ultra low noise amplifier

Anders Mellberg, Niklas Wadefalk, Iltcho Angelov et al
IEEE MTT-S International Microwave Symposium Digest, p. 161-163
Paper in proceedings
2004

Optimization of power amplifier transfer characteristics

Christian Fager, Herbert Zirath
European Microwave Conference, p. 1325-28
Paper in proceedings
2004

Integration of components in a 50 nm {InGaAs}-{InAlAs}-{InP} {HEMT} process with pseudomorphic $\rm{In}_{0.35}{Ga}_{0.35}{As}$ channel

Anders Mellberg, Mikael Malmkvist, Jan Grahn et al
Proc. 34th European Microwave Conf., p. 171-174
Paper in proceedings
2004

The influence of the gate leakage current and the gate resistance on the noise and gain performances of 90-nm CMOS for micro- and millimeter-wave frequencies

Hans-Olof Vickes, Mattias Ferndahl, Anowar Masud et al
Journal of Logic and Computation. Vol. 2, p. 971-974
Journal article
2004

High field effect electron mobility in Si face 4H-SiC MOSFET

Halldor Olafsson, Gudjon Gudjonsson, Einar Sveinbjörnsson et al
Electronics Letters. Vol. 40, p. 508-510
Journal article
2004

Flip Chip Assembly of a 40-60 GHz GaAs Microstrip Amplifier

Camilla Kärnfelt, Herbert Zirath, Piotr Starski et al
Proceedings of 34th European Microwave Conference. Vol. 1 (1), p. 89-92
Conference contribution
2004

pHEMT and mHEMT Ultra Wideband Millimeterwave Balanced Resistive Mixers

Sten Gunnarsson, Klas Yhland, Herbert Zirath
Journal of Logic and Computation, p. 1141-1144
Conference contribution
2004

Simple self-aligned fabrication process for silicon carbide static induction transistors

Kristina Dynefors, Vincent Desmaris, Joakim Eriksson et al
Materials Science Forum. Vol. 457-460, p. 1125-
Journal article
2004

Low-resistance Si/Ti/Al/Ni/Au multilayer ohmic contacts to undoped AlGaN/GaN heterostructures

Vincent Desmaris, Joakim Eriksson, Niklas Rorsman et al
Electrochemical and Solid-State Letters. Vol. 7 (4), p. G72-
Journal article
2003

The Odin satellite - I. Radiometer design and test

U. Frisk, MAGNE HAGSTRÖM, J. Ala-Laurinaho et al
Astronomy and Astrophysics. Vol. 402 (3), p. L27-L34
Journal article
2003

Study of Cavity Resonances in Quasi-Optical Grid Amplifier with Hard-Walled Waveguide Section

Per-Simon Kildal, L. Acquarelli, J. R. V. Lillo et al
Paper in proceedings
2003

A 55 GHz HEMT Monolithic Voltage Controlled Sources

Rumen Kozhuharov, Toru Masuda, Herbert Zirath
25-th GaAs IC Symposium 2003, p. 259 -262
Paper in proceedings
2003

Research and development of AlGaN/GaN HEMTs

Vincent Desmaris, Joakim Eriksson, Niklas Rorsman et al
Paper in proceedings
2003

research and development of SiC Static Induction transistor

Kristina Dynefors, Vincent Desmaris, Joakim Eriksson et al
Conference contribution
2003

Adaptive predistorter design for nonlinear high power amplifiers

Ali Behravan, Thomas Eriksson, Arne Svensson et al
Paper in proceedings
2003

A Variable Gain MMIC Amplifier

M. Anowar Masud, Herbert Zirath
Proceedings of the 11th GAAS Symposium, Munich-2003, p. 169-172
Paper in proceedings
2003

C-Band Linear Resistive Wide Bandgap FET Mixers

Kristoffer Andersson, Vincent Desmaris, Joakim Eriksson et al
IEEE MTT-S International Microwave Symposium Digest. Vol. 2, p. 8-
Paper in proceedings
2003

90-nm CMOS for microwave power applications

Mattias Ferndahl, Hans-Olof Vickes, Herbert Zirath et al
IEEE Microwave and Wireless Components Letters. Vol. 13 (12), p. 523-525
Journal article
2003

Estimation of Phase Noise for QPSK Modulation over AWGN Channels

Florent Munier, Eric Alpman, Thomas Eriksson et al
Paper in proceedings
2003

CMOS large signal model for CAD

Iltcho Angelov, Mattias Ferndahl, Fredrik Ingvarson et al
2003 IEEE MTT-S International Microwave Symposium Digest. Vol. 2, p. 643-646
Paper in proceedings
2002

Resistive SiC-MESFET mixer

Kristoffer Andersson, Joakim Eriksson, Niklas Rorsman et al
IEEE Microwave and Wireless Components Letters. Vol. 12 (4), p. 119-121
Journal article
2002

Intermodulation distortion behavior in LDMOS transistor amplifiers

Christian Fager, J.C. Pedro, N. Borges et al
IEEE MTT-S International Microwave Symposium. Vol. 1, p. 131-4
Paper in proceedings
2002

Prediction of IMD in LDMOS transistor amplifiers using a new large-signal model

Christian Fager, J.C. Pedro, N.B. Carvalho et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 50 (Dec.), p. 2834-42
Journal article
2001

System implications in designing a 60 GHz WLAN RF front end

Ali Behravan, Florent Munier, Tommy Svensson et al
Paper in proceedings
2001

Research and development of AlGaN/GaN HEMTs

Vincent Desmaris, Kristina Dynefors, Joakim Eriksson et al
Paper in proceedings
2000

System Considerations for Hardware Parameters in a 60 GHz WLAN

Jonas Noreus, Maxime Flament, Herbert Zirath et al
in Proc. of the GHz 2000 Symposium on Gigahertz Electronics, Gothenburg, Sweden, p. 267-271
Paper in proceedings
2000

High output power, broadband 28-56 GHz MMIC frequency doubler

Christian Fager, Lars Landén, Herbert Zirath
IEEE MTT-S International Microwave Symposium / Perkins, T., p. 1589-91 vol.3
Paper in proceedings
1993

W-band subharmonically pumped resistive mixer based on pseudomorphic heterostructure field effect transistor technology

Herbert Zirath, Iltcho Angelov, Niklas Rorsman et al
Journal of Logic and Computation. Vol. 1, p. 341-344
Paper in proceedings
1993

F-band resistive mixer based on heterostructure field effect transistor technology

Iltcho Angelov, Herbert Zirath, Niklas Rorsman et al
Journal of Logic and Computation. Vol. 2, p. 787-790
Paper in proceedings
1993

Characterization of InAlAs/InGaAs HFETs with high indium content in the channel grown on GaAs substrate

Niklas Rorsman, Christer Karlsson, Herbert Zirath et al
23rd European Solid State Device Research Conference, ESSDERC 1993, p. 765-768
Paper in proceedings
1992

A new empirical nonlinear model for HEMT-devices

Iltcho Angelov, Herbert Zirath, Niklas Rorsman
Journal of Logic and Computation. Vol. 3, p. 1583-1586
Paper in proceedings
1992

A balanced millimeter wave doubler based on pseudomorphic HEMTs

Iltcho Angelov, Herbert Zirath, Niklas Rorsman et al
Journal of Logic and Computation. Vol. 1, p. 353-356
Paper in proceedings
1992

A millimeterwave subharmonically pumped resistive mixer based on a heterostructure field effect transistor technology

Herbert Zirath, Iltcho Angelov, Niklas Rorsman
Journal of Logic and Computation. Vol. 2, p. 599-602
Paper in proceedings
1992

Characteristics of a millimeter wave drain mixer

Herbert Zirath, Iltcho Angelov, Niklas Rorsman et al
Proceedings of the 22nd European Microwave Conference. Vol. 2 (22), p. 987-992
Paper in proceedings
1992

HFET millimeterwave resistive mixer

Herbert Zirath, Iltcho Angelov, Niklas Rorsman
Proceedings of the 22nd European Microwave Conference. Vol. 1 (22), p. 614-619
Paper in proceedings
1991

New method for determination of the peak-velocity in epitaxial semiconductor structures by dc measurements on microbridges

W. Strupinski, Herbert Zirath, Hans Grönqvist et al
Applied Physics Letters. Vol. 59 (24), p. 3151-3153
Journal article
1991

Resistive HEMT-mixer with very low LO-power requirements and low intermodulation

Herbert Zirath, Niklas Rorsman
European Microwave Conference. Vol. 2, p. 1469-1474
Paper in proceedings