Chalmers Research: Niklas Wadefalk

2023

Optimization of InGaAs Channel for Cryogenic InP HEMT Low-Noise Amplifiers

Junjie Li, Johan Bergsten, Arsalan Pourkabirian et al

Other conference contribution

2023

Optimization of Channel Structures in InP HEMT Technology for Cryogenic Low-Noise and Low-Power Operation

Eunjung Cha, Niklas Wadefalk, Giuseppe Moschetti et al

IEEE Transactions on Electron Devices. Vol. 70 (5), p. 2431-2436

Journal article

2022

A 100-µW 4-6 GHz Cryogenic InP HEMT LNA Achieving an Average Noise Temperature of 2.6 K

Yin Zeng, Jörgen Stenarson, Peter Sobis et al

Asia-Pacific Microwave Conference Proceedings, APMC. Vol. 2022-November, p. 13-15

Paper in proceeding

2022

Influence of Spacer Thickness on the Noise Performance in InP HEMTs for Cryogenic LNAs

Junjie Li, Arsalan Pourkabirian, Johan Bergsten et al

IEEE Electron Device Letters. Vol. 43 (7), p. 1029-1032

Journal article

2022

On the relation between rf noise and subthreshold swing in InP HEMTs for cryogenic LNAs

Junjie Li, Arsalan Pourkabirian, Johan Bergsten et al

Asia-Pacific Microwave Conference Proceedings, APMC. Vol. 2022-November, p. 10-12

Paper in proceeding

2021

Reduction of Noise Temperature in Cryogenic InP HEMT Low Noise Amplifiers with Increased Spacer Thickness in InAlAs-InGaAs-InP Heterostructures

Junjie Li, Arsalan Pourkabirian, Johan Bergsten et al

Other conference contribution

2020

A 300-mu W Cryogenic HEMT LNA for Quantum Computing

Eunjung Cha, Niklas Wadefalk, Giuseppe Moschetti et al

PROCEEDINGS OF THE 2020 IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS), p. 1299-1302

Paper in proceeding

2020

III-V HEMTs for cryogenic low noise amplifiers

Jan Grahn, Eunjung Cha, Arsalan Pourkabirian et al

Technical Digest - International Electron Devices Meeting, IEDM. Vol. 2020-December, p. 25.6.1-25.6.4

Paper in proceeding

2020

A 300-µW Cryogenic HEMT LNA for Quantum Computing

Eunjung Cha, Niklas Wadefalk, Giuseppe Moschetti et al

IEEE MTT-S International Microwave Symposium Digest. Vol. 2020-August, p. 1299-1302

Paper in proceeding

2019

Low Power Cryogenic Rad-hard LNAs for Space

Christina Emrich, Peter Sobis, Niklas Wadefalk et al

Paper in proceeding

2018

Low noise 874 GHz receivers for the international submillimetre airborne radiometer (ISMAR)

Arvid Hammar, Peter Sobis, Vladimir Drakinskiy et al

Review of Scientific Instruments. Vol. 89 (5)

Journal article

2018

0.3-14 and 16-28 GHz Wide-Bandwidth Cryogenic MMIC Low-Noise Amplifiers

Eunjung Cha, Niklas Wadefalk, Per Ake Nilsson et al

IEEE Transactions on Microwave Theory and Techniques. Vol. 66 (11), p. 4860-4869

Journal article

2017

Cryogenic W-band LNA for ALMA band 2+3 with average noise temperature of 24 K

Yulung Tang, Niklas Wadefalk, J. Kooi et al

IEEE MTT-S International Microwave Symposium Digest, p. 176-179

Paper in proceeding

2017

Cryogenic LNAs for SKA band 2 to 5

Joel Schleeh, Giuseppe Moschetti, Niklas Wadefalk et al

IEEE MTT-S International Microwave Symposium Digest, p. 164-167

Paper in proceeding

2017

Dependence of noise temperature on physical temperature for cryogenic low-noise amplifiers

M. A. McCulloch, Jan Grahn, S. J. Melhuish et al

Journal of Astronomical Telescopes, Instruments, and Systems. Vol. 3 (1)

Journal article

2017

Two-Finger InP HEMT Design for Stable Cryogenic Operation of Ultra-Low-Noise Ka- and Q-Band LNAs

Eunjung Cha, Giuseppe Moschetti, Niklas Wadefalk et al

IEEE Transactions on Microwave Theory and Techniques. Vol. 65 (12), p. 5171-5180

Journal article

2017

Two-finger InP HEMT design for stable cryogenic operation of ultra-low-noise Ka-band LNAs

Eunjung Cha, Giuseppe Moschetti, Niklas Wadefalk et al

IEEE MTT-S International Microwave Symposium Digest, p. 168-171

Paper in proceeding

2016

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 proceeding

2016

Cryogenic low-noise InP HEMTs: A source-drain distance study

Eunjung Cha, Arsalan Pourkabirian, Joel Schleeh et al

2016 Compound Semiconductor Week, CSW 2016, p. Article number 7528576-

Paper in proceeding

2016

10 K Room Temperature LNA for SKA Band 1

Joel Schleeh, Niklas Wadefalk, Per-Åke Nilsson et al

IEEE MTT-S International Microwave Symposium Digest. Vol. 2016-August, p. Art no 7540344-

Paper in proceeding

2016

Ultra Low Noise 600/1200 GHz and 874 GHz GaAs Schottky Receivers for SWI and ISMAR

Peter Sobis, Vladimir Drakinskiy, Niklas Wadefalk et al

Twenty-seventh International Symposium on Space Terahertz Technology (ISSTT)

Paper in proceeding

2015

Phonon black-body radiation limit for heat dissipation in electronics

Joel Schleeh, J. Mateos, Ignacio Íñiguez-De-La-Torre et al

Nature Materials. Vol. 14 (2), p. 187-192

Journal article

2015

SWI 1200/600 GHz highly integrated receiver front-ends

Peter Sobis, Vladimir Drakinskiy, Niklas Wadefalk et al

36th ESA Antenna Workshop on Antennas and RF Systems for Space Science, ESA/ESTEC ,Noordwijk, The Netherlands; 6-9 Oct. 2015. Vol. session S3.1.2

Paper in proceeding

2014

Reliability Assessment of Mixers, Multipliers and Low Noise Amplifiers for Space Applications

Aik-Yean Tang, Peter Sobis, Niklas Wadefalk et al

GigaHertz Symposium

Paper in proceeding

2014

Low noise GaAs Schottky TMIC and InP HEMT MMIC based Receivers for the ISMAR and SWI Instruments

Peter Sobis, Vladimir Drakinskiy, Niklas Wadefalk et al

ESA Workshop on Micro and Millimetre Wave Technology and Techniques, Estec, the Netherlands

Paper in proceeding

2014

Cryogenic noise performance of InGAAs/InAlAs HEMTs grown on InP and GaAs substrate

Joel Schleeh, Helena Rodilla, Niklas Wadefalk et al

Solid-State Electronics. Vol. 91, p. 74-77

Journal article

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 proceeding

2013

Cryogenic Broadband Ultra-Low-Noise MMIC LNAs for Radio Astronomy Applications

Joel Schleeh, Niklas Wadefalk, Per-Åke Nilsson et al

IEEE Transactions on Microwave Theory and Techniques. Vol. 61 (2), p. 871-877

Journal article

2013

Characterization and Modeling of Cryogenic Ultralow-Noise InP HEMTs

Joel Schleeh, Helena Rodilla, Niklas Wadefalk et al

IEEE Transactions on Electron Devices. Vol. 60 (1), p. 206-212

Journal article

2013

Cryogenic Performance of Low-Noise InP HEMTs: a Monte Carlo Study

Helena Rodilla, Joel Schleeh, Per-Åke Nilsson et al

IEEE Transactions on Electron Devices. Vol. 60 (5), p. 1625-1631

Journal article

2013

Cryogenic Ultra-Low Noise Amplification - InP PHEMT vs. GaAs MHEMT

Joel Schleeh, Helena Rodilla, Niklas Wadefalk et al

Conference Proceedings - International Conference on Indium Phosphide and Related Materials

Paper in proceeding

2013

Influence of gate-channel distance in low-noise InP HEMTs

Per-Åke Nilsson, Helena Rodilla, Joel Schleeh et al

Conference Proceedings - International Conference on Indium Phosphide and Related Materials

Paper in proceeding

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

IEEE MTT-S International Microwave Symposium Digest

Paper in proceeding

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

Cryogenic InAs/AlSb HEMT Wideband Low-Noise IF Amplifier for Ultra-Low-Power Applications

Giuseppe Moschetti, Niklas Wadefalk, Per-Åke Nilsson et al

IEEE Microwave and Wireless Components Letters. Vol. 22 (3), p. 144-146

Journal article

2012

Cryogenic Operation of InAs/AlSb HEMT Hybrid LNAs

Giuseppe Moschetti, Niklas Wadefalk, Per-Åke Nilsson et al

15th European Microwave Week - Space for Microwaves Conference Proceedings. Amsterdam, NETHERLANDS. OCT 28-NOV 02, 2012, p. 373-376

Paper in proceeding

2012

Multifunction low noise millimeterwave MMICs for remote sensing

Herbert Zirath, Vessen Vassilev, Morteza Abbasi et al

IEEE MTT-S International Microwave Symposium Digest

Paper in proceeding

2012

A Broadband, Low Noise, Integrated 340 GHz Schottky Diode Receiver

Peter Sobis, Niklas Wadefalk, Anders Emrich et al

IEEE Microwave and Wireless Components Letters. Vol. 22 (7), p. 366-368

Journal article

2011

InAs/AlSb HEMTs for cryogenic LNAs at ultra-low power dissipation

Giuseppe Moschetti, Niklas Wadefalk, Per-Åke Nilsson et al

Solid-State Electronics. Vol. 64 (1), p. 47-53

Journal article

2011

Cryogenic 2-13 GHz Eleven feed for reflector antennas in future wideband radio telescopes

Jian Yang, Miroslav Pantaleev, Per-Simon Kildal et al

IEEE Transactions on Antennas and Propagation. Vol. 59 (6), p. 1918-1934

Journal article

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

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 proceeding

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 proceeding

2010

THE ALLEN TELESCOPE ARRAY Pi GHz SKY SURVEY. I. SURVEY DESCRIPTION AND STATIC CATALOG RESULTS FOR THE BOOTES FIELD

G. C. Bower, S. Croft, G. Keating et al

Astrophysical Journal. Vol. 725 (2), p. 1792-1804

Journal article

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

THE ALLEN TELESCOPE ARRAY TWENTY-CENTIMETER SURVEY-A 690 DEG(2), 12 EPOCH RADIO DATA SET. I. CATALOG AND LONG-DURATION TRANSIENT STATISTICS

S. Croft, G. C. Bower, R. Ackermann et al

Astrophysical Journal. Vol. 719 (1), p. 45-58

Journal article

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-

Other conference contribution

2010

Design of cryogenic 2-14 GHz Eleven feed for reflector antennas for future radio telescopes

Jian Yang, Miroslav Pantaleev, Per-Simon Kildal et al

Gigahertz Symposium 2010, Lund University, 9-10 March 2010

Paper in proceeding

2010

Ultra-Wideband Chip Attenuator for Precise Noise Measurements at Cryogenic Temperatures

J. L. Cano, Niklas Wadefalk, J. D. Gallego-Puyol

IEEE Transactions on Microwave Theory and Techniques. Vol. 58 (9), p. 2504-2510

Magazine article

2010

Cryogenic 2-14GHz low noise receiver for radio astronomy using Eleven feed

Miroslav Pantaleev, Jian Yang, Per-Simon Kildal et al

Gigahertz Symposium 2010, Lund University, 9-10 March 2010

Other conference contribution

2010

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

Jan Svedin, Staffan Rudner, Gunnar Thordarsson et al

35th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010

Paper in proceeding

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 proceeding

2010

MMIC-based receivers for mm-wave radiometry

Vessen Vassilev, Niklas Wadefalk, Rumen Kozhuharov et al

IRMMW-THz 2010 - 35th International Conference on Infrared, Millimeter, and Terahertz Waves, Conference Guide

Other conference contribution

2009

Design and realization of a linearly polarized Eleven feed for 1-10 GHz

Jian Yang, Chen Xiaoming, Niklas Wadefalk et al

IEEE Antennas and Wireless Propagation Letters. Vol. 8, p. 64-68

Journal article

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

Other conference contribution

2009

Developing a cooled 2-14 GHz Eleven feed for SKA and VLBI 2010

Per-Simon Kildal, Jian Yang, Yogesh Karandikar et al

URSI National Radio Science Meeting, Charleston, USA, 1-5 June 2009

Paper in proceeding

2009

The Allen Telescope Array: The First Widefield, Panchromatic, Snapshot Radio Camera for Radio Astronomy and SETI

J. Welch, D. Backer, L. Blitz et al

Proceedings of the IEEE. Vol. 97 (8), p. 1438-1447

Journal article

2009

InAs/AlSb HEMTs characterised at cryogenic temperatures

Per-Åke Nilsson, Giuseppe Moschetti, Niklas Wadefalk et al

WOCSDICE 2009

Paper in proceeding

2009

Development of a coolable 2-14 GHz Eleven feed for future radio telescopes for SKA and VLBI 2010

Per-Simon Kildal, Jian Yang, Yogesh Karandikar et al

International Conference on Electromagnetics in Advanced Applications (ICEAA 2009), Torino, Italy, September 14-18, 2009. Vol. 1-2, p. 522-524

Paper in proceeding

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 proceeding

2009

Metamorphic HEMT technology for low-noise applications

A. Leuther, A. Tessmann, I. Kallfass et al

Conference Proceedings - International Conference on Indium Phosphide and Related Materials, p. 188-191

Paper in proceeding

2009

DC characteristics of InAs/AlSb HEMTs at cryogenic temperatures

Giuseppe Moschetti, Per-Åke Nilsson, Niklas Wadefalk et al

2009 IEEE International Conference on Indium Phosphide & Related Materials, p. 323-5

Paper in proceeding

2009

Electrical Design of a Cooled 2-14 GHz Eleven Feed for SKA and VLBI 2010

Per-Simon Kildal, Jian Yang, Yogesh Karandikar et al

IVS VLBI2010 Workshop on Future Radio Frequencies and Feeds (FRFF), March 18 - 21, 2009, Wettzell, Germany

Paper in proceeding

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

Proc. of 2008 IEEE MTT-S International Microwave Symposium

Paper in proceeding

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

Report on Developing Decade Bandwidth Eleven Feeds for Radio Telescopes such as SKA and VLBI 2010

Jian Yang, Chen Xiaoming, Niklas Wadefalk et al

30th ESA Antenna Workshop on Antennas for Earth Observation, Science, Telecommunication and Navigation Space Missions, 27-30 May 2008, ESA/ESTEC Noordwijk

Paper in proceeding

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

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7117, p. Art. no. 71170H-

Paper in proceeding

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

2007