Spartak Gevorgian

Professor at Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory

Spartak Gevorgian received the M.S. degree in radioelectronics from the Yerevan Polytechnic Institute, Yerevan, Armenia, in 1972, and the Ph.D. and Dr.Sci. degrees from the Electrotechnical University, St. Petersburg, Russia, in 1977 and 1991, respectively. From 1972 to 1993, he held different research and teaching positions with the Yerevan Polytechnic Institute and the Electrotechnical University. From 1993 to 1998, he held research positions with Chalmers University of Technology, Göteborg, Sweden. Since 1998, he has been a Professor with Chalmers University of Technology. Since 1996, he has also worked part time with Ericsson Microwave Systems AB (currently Ericsson AB), Mölndal, Sweden. He has authored or coauthored over 300 papers and conference presentations. He holds over 30 patents/patent applications. His research interests are physics, design, and experimental investigation of microwave devices and components based on ferroelectrics, silicon RF integrated circuits (RFICs) and monolithic microwave integrated circuits (MMICs), microwave photonic devices (optically controlled components), and modeling of passive coplanar components based on conformal mapping.

Source: chalmers.se

Projects

2012–2014

Switchable and tunable composite film bulk acoustic wave resonators (CompFBAR)

Spartak Gevorgian Terahertz and Millimetre Wave Laboratory
Swedish Research Council (VR)

2013–2015

Integrated graphene/ferroelectric films for microwave/THz devices

Jan Stake Terahertz and Millimetre Wave Laboratory
Andrei Vorobiev Terahertz and Millimetre Wave Laboratory
Spartak Gevorgian Terahertz and Millimetre Wave Laboratory
MICHAEL ANDERSSON Terahertz and Millimetre Wave Laboratory
Swedish Research Council (VR)

2010–2015

Photonic Advanced Research And Development for Integrated Generic Manufacturing (PARADIGM)

Spartak Gevorgian Terahertz and Millimetre Wave Laboratory
European Commission (FP7)

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

Publications

2017

Dielectric properties of Mn doped Bismuth Barium Titanate based ceramic thin films prepared by PLD technique

Shoaib Alam Mallick, Andrei Vorobiev, Z. Ahmad et al
Ceramics International. Vol. 43 (12), p. 8778-8783
Journal article
2015

Composite Ferroelectric FBARs That Are Switchable Between the First and Second Harmonics: Experimental Demonstration

Andrei Vorobiev, Spartak Gevorgian
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. Vol. 62 (3), p. 565-575
Journal article
2015

Tunable ferroelectric FBARs: An overview

Andrei Vorobiev, Spartak Gevorgian
Paper in proceedings
2014

Effect of growth conditions on microstructure of BiFeO3-0.33BaTiO(3) films and performance of bulk acoustic wave resonators

Andrei Vorobiev, Markus Löffler, Eva Olsson et al
Journal of Applied Physics. Vol. 115 (8)
Journal article
2014

Extraction of carrier transport properties in graphene from microwave measurements

MICHAEL ANDERSSON, Andrei Vorobiev, Spartak Gevorgian et al
European Microwave Conference (EuMC), 2014 44th, p. 359 - 362
Paper in proceedings
2014

Impact of the electrode material and shape on performance of intrinsically tunable ferroelectric FBARs

Andrei Vorobiev, Spartak Gevorgian
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. Vol. 61 (5), p. 840-848
Journal article
2014

Intrinsically switchable bulk acoustic wave resonators based on paraelectric films

Andrei Vorobiev, Spartak Gevorgian
2014 44th European Microwave Conference, EuMC 2014 - Held as Part of the 17th European Microwave Week, EuMW 2014, Rome, Italy, 6-9 October 2014, p. 347-350
Paper in proceedings
2014

Intrinsically Switchable and Tuneable FBARs for Microwave Communication and Sensor Applications

Andrei Vorobiev, Spartak Gevorgian
GigaHertz Symposium, p. 43-
Paper in proceedings
2014

Intrinsically switchable thin film bulk acoustic wave resonators

Andrei Vorobiev, Spartak Gevorgian
Applied Physics Letters. Vol. 104 (22), p. Art. no. 222905-
Journal article
2014

Comparison of carrier scattering mechanisms in chemical vapor deposited graphene on fused silica and strontium titanite substrates

MICHAEL ANDERSSON, Andrei Vorobiev, Spartak Gevorgian et al
Paper in proceedings
2014

Tunable microwave arrangements

Spartak Gevorgian, Anatoli Deleniv, Thomas Lewin et al
Patent
2014

Intrinsically tunable bulk acoustic wave resonators based on sol-gel grown PMN-PT films

Andrei Vorobiev, Matjaz Spreitzer, Asja Veber et al
Journal of Applied Physics. Vol. 116 (6), p. Art. no. 064101-
Journal article
2013

Loss balance in tunable ferroelectric FBARs

Spartak Gevorgian, Andrei Vorobiev
8th European Microwave Integrated Circuits Conference, EuMIC 2013 - Held as Part of 16th European Microwave Week, EuMW 2013; Nuremberg; Germany; 6 October 2013 through 8 October 2013, p. 372-375
Paper in proceedings
2013

Microwave characterization of Ti/Au-graphene contacts

MICHAEL ANDERSSON, Andrei Vorobiev, Jie Sun et al
Applied Physics Letters. Vol. 103 (17), p. 173111-
Journal article
2013

Tunable FBARs based on sol-gel grown PMN-PT films

Andrei Vorobiev, Spartak Gevorgian, Matjaz Spreitzer et al
43rd European Microwave Conference, EuMC 2013 - Held as Part of the 16th European Microwave Week, EuMW 2013, Nuremberg, Germany, 7-10 October 2013, p. 1339-1342
Paper in proceedings
2013

Ferroelectric film bulk acoustic wave resonators for liquid viscosity sensing

Andrei Vorobiev, Spartak Gevorgian
Journal of Applied Physics. Vol. 114 (8)
Journal article
2013

Ferroelectric film bulk acoustic wave resonators for liquid viscosity sensing

Andrei Vorobiev, Spartak Gevorgian
Paper in proceedings
2013

Effect of Growth Conditions on Performance of BiFeO3-0.33BaTiO3 BAW Resonators

Andrei Vorobiev, Spartak Gevorgian, Markus Löffler et al
Paper in proceedings
2013

Loss balance in tunable ferroelectric FBARs

Spartak Gevorgian, Andrei Vorobiev
43rd European Microwave Conference, EuMC 2013 - Held as Part of the 16th European Microwave Week, EuMW 2013, Nuremberg, Germany, 7-10 October 2013, p. 1343-1346
Paper in proceedings
2013

Tunable delay line arrangement

Spartak Gevorgian, Bengt-Erik Olsson
Patent application
2013

Tuneable Film Bulk Acoustic Wave Resonators

Spartak Gevorgian, Andrei Vorobiev, Alexander Tagantsev
Book
2013

Tunable FBARs Based on Sol-Gel Grown PMN-PT Films

Andrei Vorobiev, Spartak Gevorgian, Spreitzer Matjaz et al
8th European Microwave Integrated Circuits Conference, EuMIC 2013 - Held as Part of 16th European Microwave Week, EuMW 2013; Nuremberg; Germany; 6 October 2013 through 8 October 2013, p. 368-371
Paper in proceedings
2013

Enhanced tunable performance of high Q-factor BaxSr1-xTiO3 film bulk acoustic wave resonators

Andrei Vorobiev, Spartak Gevorgian
International Journal of Microwave and Wireless Technologies. Vol. 5 (3), p. 361-369
Journal article
2013

Impedance of DC-Bias-Controlled Composite FBARs

Spartak Gevorgian, Andrei Vorobiev
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. Vol. 60 (4), p. 795-804
Journal article
2012

Microwave characterization of intrinsically tunable FBARs

Andrei Vorobiev, Spartak Gevorgian
Journal of Logic and Computation
Paper in proceedings
2012

Intrinsically tunable 0.67 BiFeO3-0.33 BaTiO3 thin film bulk acoustic wave resonators

Andrei Vorobiev, Spartak Gevorgian, Norayr Martirosyan et al
Applied Physics Letters. Vol. 101 (23), p. 232903-232903-5-
Journal article
2012

Growth temperature dependent dielectric properties of BiFeO3 thin films deposited on silica glass substrates

Taimur Ahmed, Andrei Vorobiev, Spartak Gevorgian
Thin Solid Films. Vol. 520 (13), p. 4470-4474
Journal article
2012

ADS Based 1D Model of Solidly Mounted FBARs Including Longitudinal and Shear Waves

Spartak Gevorgian, Andrei Vorobiev
Integrated Ferroelectrics. Vol. 134 (1), p. 75-80
Journal article
2012

Tunable BiFeO3-BaTiO3 thin film bulk acoustic wave resonators for microwave applications

Andrei Vorobiev, Spartak Gevorgian, Norayer Martirosyan et al
Paper in proceedings
2012

Tunable FBARs: Intrinsic vs. extrinsic tunability

Spartak Gevorgian, Andrei Vorobiev
Journal of Logic and Computation
Paper in proceedings
2012

Adhesion layer-bottom electrode interaction during BaxSr1−xTiO3 growth as a limiting factor for device performance

Markus Löffler, Andrei Vorobiev, Lunjie Zeng et al
Journal of Applied Physics. Vol. 111 (12), p. Art. no. 124514-
Journal article
2012

Improved Tunable Performance of high Q-factor BaxSr1-xTiO3 Film Bulk Acoustic Wave Resonators

Andrei Vorobiev, Spartak Gevorgian
15th European Microwave Week - Space for Microwaves Conference Proceedings, p. 1-3
Paper in proceedings
2012

Microwave Response of BiFeO3 Films in Parallel-Plate Capacitors

Andrei Vorobiev, Taimur Ahmed, Spartak Gevorgian
Integrated Ferroelectrics. Vol. 134 (1), p. 111-117
Journal article
2011

Correlations between microstructure and Q-factor of tunable thin film bulk acoustic wave resonators

Andrei Vorobiev, Spartak Gevorgian, Markus Löffler et al
Journal of Applied Physics. Vol. 110 (5)
Journal article
2011

Tunable arrangements

Spartak Gevorgian, Anders Derneryd
Patent
2011

Capacitance arrangement and method relating thereto

Spartak Gevorgian, Anatoli Deleniv, Thomas Lewin
Patent
2011

Microwave response of BiFeO3 films in parallel-plate capacitors

Andrei Vorobiev, Taimur Ahmed, Spartak Gevorgian
Paper in proceedings
2011

Dielectric model of point charge defects in insulating paraelectric perovskites

V. Buniatian, Norayr Martirosyan, Andrei Vorobiev et al
Journal of Applied Physics. Vol. 110 (9)
Journal article
2011

Model of ferroelectric FBARs including longitudinal and shear waves

Spartak Gevorgian, Andrei Vorobiev
Conference poster
2011

Tunable bulk acoustic wave resonators based on Ba0.25Sr0.75TiO3 thin films and a HfO2/SiO2 Bragg reflector

John Berge, Spartak Gevorgian
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. Vol. 58 (12), p. 2768-2771
Journal article
2011

Method to increase the tuneability of varactor

Spartak Gevorgian, Harald Jacobsson, Anatoli Deleniv
Patent
2011

Effect of interface roughness on acoustic loss in tunable thin film bulk acoustic wave resonators

Andrei Vorobiev, John Berge, Spartak Gevorgian et al
Journal of Applied Physics. Vol. 110 (2)
Journal article
2011

Microwave losses in ferroelectric varactors

Andrei Vorobiev, Spartak Gevorgian
Paper in proceedings
2011

Large area photo detector

Anatoli Deleniv, Spartak Gevorgian, Arne Alping
Patent application
2010

Ferroelectrics in passive scanning antennas

Spartak Gevorgian, Andrei Vorobiev
Paper in proceedings
2010

Varactor device with reduced temperature dependence

Spartak Gevorgian, Harald Jacobsson, Thomas Lewin
Patent
2010

Silicon substrate integration of BST based tunable TFBARs using all-dielectric SiO2/AlN Bragg reflectors

Andrei Vorobiev, John Berge, Martin Norling et al
2010 10th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, SiRF 2010 - Digest of Papers, p. 41-44
Paper in proceedings
2010

Evaluation of tunable FBARs with improved performance

Andrei Vorobiev, Spartak Gevorgian
Paper in proceedings
2010

Tuneable ferroelectric delay line having mirror image conductors

Dan Kuylenstierna, Harald Jacobsson, Thomas Lewin et al
Patent
2010

Ferroelectric lens

Ola Tageman, Spartak Gevorgian, Anatoli Deleniv et al
Patent
2010

pH-sensitive properties of barium strontium titanate (BST) thin films prepared by pulsed laser deposition technique

V. V. Buniatyan, M. H. Abouzar, N. W. Martirosyan et al
Physica Status Solidi (A) Applications and Materials. Vol. 207 (4), p. 824-830
Journal article
2010

A highly integrated heterogeneous micro- and mm-wave platform

Pierre Franck Alleaume, Lars Aspemyr, Spartak Gevorgian et al
Journal of Logic and Computation, p. 461-464
Conference contribution
2010

Switchable/Tunable FBARs: Current status and potential

Spartak Gevorgian, Andrei Vorobiev
Paper in proceedings
2010

Tunable microwave arrangement (surface mounted resonator)

Spartak Gevorgian, A. Deleniv, T Lewin et al
Patent application
2010

Tunable BaxSr1-xTiO3 FBARs based on SiO2/W Bragg reflectors

Andrei Vorobiev, Spartak Gevorgian
Journal of Logic and Computation, p. 1444-1447
Conference contribution
2010

Layout Optimization of Small-Size Ferroelectric Parallel-Plate Varactors

Martin Norling, Dan Kuylenstierna, Andrei Vorobiev et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 58 (6), p. 1475-1484
Journal article
2010

Improved performance of tunable BaxSr1-xTiO3 TFBARs

Andrei Vorobiev, Spartak Gevorgian
Paper in proceedings
2010

Ferroelectric varactors suitable for capacitive shunt switching

Guru Subramanyam, Andrei Vorobiev, Spartak Gevorgian
Patent
2010

Growth and dielectric characterisation of large grain BiFeO3 thin films on amorphous SiO2 substrates

Andrei Vorobiev, Norayr Martirosyan, Sten Eriksson et al
IOP Conference Series: Materials Science and Engineering - Fundamentals and Technology of Multifunctional Oxide Thin Films (Symposium G, EMRS 2009 Spring Meeting) 8–12 June 2009, Strasbourg, France. Vol. 8 (1), p. 012001-
Paper in proceedings
2010

Microwave and thz applications of ferroelectrics and multiferroics

Spartak Gevorgian, Andrei Vorobiev
Conference contribution
2010

Tunable thin film bulk acoustic wave resonators with improved Q-factor

Andrei Vorobiev, Spartak Gevorgian
Applied Physics Letters. Vol. 96 (21), p. Article Number: 212904 -
Journal article
2010

The effect of Bragg reflectors on the electromechanical performance of parallel-plate ferroelectric capacitors

John Berge, Martin Norling, Andrei Vorobiev et al
IOP Conference Series: Materials Science and Engineering - Fundamentals and Technology of Multifunctional Oxide Thin Films (Symposium G, EMRS 2009 Spring Meeting) 8–12 June 2009, Strasbourg, France. Vol. 8 (1), p. 012011-
Paper in proceedings
2010

Impact of the electrodes on the tunability of paraelectric BST film based FBARs

Spartak Gevorgian, Andrei Vorobiev
13th European Microwave Week 2010, EuMW2010: Connecting the World - 40th European Microwave Conference, EuMC 2010; Paris; 28 September 2010 through 30 September 2010, p. 1210-1213
Paper in proceedings
2009

CAD oriented frequency, temperature, and DC bias dependent small-signal, scalable circuit model of parallel-plate paraelectric varactors

Spartak Gevorgian, Anatoli Deleniv, Andrei Vorobiev et al
International Journal of RF and Microwave Computer-Aided Engineering. Vol. 19 (2), p. 243--257-
Journal article
2009

Varactor Device with Reduced Temperature Dependence.

Spartak Gevorgian, Harald Jacobsson, Thomas Lewin
Patent application
2009

Tuneable resonator

Spartak Gevorgian, Thomas Lewin, Harald Jacobsson et al
Patent
2009

A voltage controlled switching device

Spartak Gevorgian, T Lewin, Andrei Vorobiev et al
Patent application
2009

Modeling of Conductor Losses in Capacitors with Rectangular and Circular Plates

Anatoli Deleniv, Spartak Gevorgian
International Journal of RF and Microwave Computer-Aided Engineering. Vol. 19 (2), p. 170-176
Journal article
2009

Capacitive field-effect pH sensor based on an electrolyte-ferroelectric-insulator-semiconductor structure

V Buniatyan, N Martirosyan, Maryam Abouzar et al
Paper in proceedings
2009

The potential of multiferroics for GHz and THz applications

Spartak Gevorgian, Andrei Vorobiev
Paper in proceedings
2009

Tuneable antenna arrangement

Spartak Gevorgian
Patent application
2009

Composition dependent tunable microwave properties of thin BaxSr1-xTiO3 films

Andrei Vorobiev, Spartak Gevorgian
Paper in proceedings
2009

Agile Ferroelectric Components in EC Project NANOSTAR

Spartak Gevorgian
Paper in proceedings
2009

Tuneable microwave arrangements

Spartak Gevorgian, T Lewin, Dan Kuylenstierna
Patent
2009

Ferroelectric lens

Vladimir Sherman, Pierre Filhol, Spartak Gevorgian et al
Patent application
2009

Parameter extraction for tunable TFBARs based on BaxSr1-xTiO3

Martin Norling, John Berge, Spartak Gevorgian
IEEE IMS’2009 Dig., 2009, p. p101-104
Paper in proceedings
2009

Agile microwave devices

Spartak Gevorgian
IEEE Microwave Magazine. Vol. 10 (5), p. 93-98
Journal article
2009

Agile Microwave Dielectrics: Are there Other Alternatives to BaxSr1-xTiO3

Spartak Gevorgian, Andrei Vorobiev
Paper in proceedings
2008

Oscillator circuit with tuneable signal delay means

Harald Jacobsson, Spartak Gevorgian, Thomas Lewin
Patent
2008

Field and temperature dependent parameters of the dc field induced resonances in BaxSr1-xTiO3-based tunable thin film bulk acoustic resonators

John Berge, Martin Norling, Andrei Vorobiev et al
Journal of Applied Physics. Vol. 103 (6), p. 064508-
Journal article
2008

Oscillators based on monolithically integrated AlN TFBARs

Martin Norling, Johannes Enlund, Ilia Katardjiev et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 56 (12), p. 3209-3216
Journal article
2008

On-Wafer characterization of varactors using resonating microprobes

Anatoli Deleniv, Andrei Vorobiev, Spartak Gevorgian
IEEE trans on microwave theory and techniques. Vol. 56 (5), p. 1105-
Journal article
2008

Room temperature dynamic life time measurements of ferroelectric varactors

Spartak Gevorgian, Andrei Vorobiev, Samira Mousavi Nik et al
Paper in proceedings
2008

Self-Propagating High-Temperature Synthesis (SHS) of Fe doped YMnO3 and BaTiO3

N Martirosyan, Spartak Gevorgian, V Buniatyan et al
Paper in proceedings
2008

Tunable Technologies

Spartak Gevorgian
Paper in proceedings
2008

Tunable technologies for agile microwave systems

Spartak Gevorgian
Paper in proceedings
2008

Modelling of Conductor Losses in Capacitors with Rectangular and Circular Plates

Anatoli Deleniv, Spartak Gevorgian
Journal article
2008

Left-Handed Media Using. Dielectric Ring Resonators

Anatoli Deleniv, Spartak Gevorgian
Paper in proceedings
2008

Tunable Resonator (FBAR)

Spartak Gevorgian, T Lewin, Harald Jacobsson et al
Patent application
2008

Delay locked loop with precision controlled delay

Harald Jacobsson, Spartak Gevorgian, Thomas Lewin
Patent
2008

A 2 GHz oscillator using a monolithically integrated AlN TFBAR

Martin Norling, Johannes Enlund, Ilia Katardjiev et al
Journal of Logic and Computation. Vol. 1 (1), p. 843-846
Paper in proceedings
2007

Component for electromagnetic waves and a method for manufacturing the same

Leif Bergstedt, Spartak Gevorgian, Marika Gustafsson
Patent
2007

Ferroelectric devices and method relating thereto

Spartak Gevorgian, E. Wikborg
Patent
2007

Tunable Microwave Arrangements

Spartak Gevorgian, Lewin Thomas, Dan Kuylenstierna
Patent application
2007

Resonance technique for accurate on-wafer characterization of ferroelectric varactors

Anatoli Deleniv, Spartak Gevorgian, Vladimir Sherman et al
Journal of Logic and Computation. Vol. 3, p. 2063-2066
Paper in proceedings
2007

Ferroelectric varactors suitable for capacitive shunt switching and wireless sensing

Guru Subramanyam, Andrei Vorobiev, Spartak Gevorgian
Patent application
2007

The effect of growth temperature on the nanostructure and dielectric response of BaTiO3 ferroelectric films

John Berge, Andrei Vorobiev, Spartak Gevorgian
Thin Solid Films. Vol. 515 (16), p. 6302-6308
Journal article
2007

Design of the Compact Band-Pass Filter Utilizing Dielectric Loaded

Anatoli Deleniv, Spartak Gevorgian
37th European Microwave Conference, EUMC; Munich; Germany; 9 October 2007 through 12 October 2007. Vol. 2, p. 886-889
Paper in proceedings
2007

Thin film Ba0.25Sr0.75TiO3 voltage tunable capacitors on fused silica substrates for applications in microwave microelectronics

Andrei Vorobiev, John Berge, Spartak Gevorgian
Thin Solid Films. Vol. 515 (16), p. 6606-6610
Journal article
2007

Delay locked loop with precision contolled delay

Harald Jacobsson, Spartak Gevorgian, Thomas Lewin
Patent application
2007

Tunable Arrangements

Spartak Gevorgian, Anders Derneryd
Patent application
2007

Silicon Substrate Integrated Ferromagnetic Nanowires for Microwave

Anatoli Deleniv, Vladimir Drakinskiy, Paul Evans et al
37th European Microwave Conference, EUMC; Munich; Germany; 9 October 2007 through 12 October 2007. Vol. 2, p. 1310-1313
Paper in proceedings
2007

A low-noise K-band VCO based on room-temperature ferroelectric varactors

Martin Norling, Andrei Vorobiev, Harald Jacobsson et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 55 (2), p. 361-369
Journal article
2007

Performance of Coplanar Waveguides on Surface Passivated Highly Resistive Silicon Covered by Ferroelectric Thin Film

Dan Kuylenstierna, Martin Norling, Andrei Vorobiev et al
IEEE MTT-S International Microwave Symposium Digest, Honolulu, Hawaii, p. 2055 - 2058
Paper in proceedings
2007

Capacitor

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

Experimental characterization of the 3rd order nonlinearities in thin film parallel-plate ferroelectric varactors

Anatoli Deleniv, Pär Rundqvist, Andrei Vorobiev et al
Journal of Logic and Computation. Vol. 2, p. 683-686
Paper in proceedings
2007

Comparison of high-resistivity silicon surface passivation methods

Martin Norling, Dan Kuylenstierna, Andrei Vorobiev et al
EuMIC 2007 Proceedings, p. 215-218
Paper in proceedings
2007

Tunable Solidly Mounted Thin Film Bulk Acoustic Resonators Based on BaxSr1-xTiO3 Films

John Berge, Andrei Vorobiev, William Steichen et al
IEEE Microwave and Wireless Components Letters. Vol. 17 (9), p. 655-657
Journal article
2007

Oscillator circuit with tuneable signal delay means

Harald Jacobsson, Spartak Gevorgian, Thomas Lewin
Patent application
2006

Composite Right/Left Handed Transmission Line Phase Shifter Using Ferroelectric Varactors

Dan Kuylenstierna, Andrei Vorobiev, Peter Linner et al
Microwave and Wireless Components Letters. Vol. 16 (4), p. 167-169
Journal article
2006

Circuit model of a SiGe HBT flip-chip mounted onto a silicon carrier

Martin Norling, Spartak Gevorgian
IEEE Radio Frequency Integrated Circuits Symposium, p. 377-380
Paper in proceedings
2006

A detector for detecting electromagnetic radiation

Leif Bergstedt, Spartak Gevorgian
Patent application
2006

Parallel-Plate Ferroelectric Varactors in Tunable Microwave Devices

Spartak Gevorgian
Paper in proceedings
2006

40 GHz Lumped Element Tunable Bandpass Filters with Transmission Zeros Based on Thin Ba0.25Sr0.75TiO3 (BST) Film Varactors

Dan Kuylenstierna, Andrei Vorobiev, Spartak Gevorgian
Paper in proceedings
2006

Tunable ferroelectric resonator arrangement

Spartak Gevorgian, Anatoli Deleniv, Orest Vendik et al
Patent
2006

Broadband microprobe characterization of the ferroelectric films and varactors

Andrei Vorobiev, Dan Kuylenstierna, Pär Rundqvist et al
36th European Microwave Conference, EuMC 2006; Manchester; United Kingdom; 10 September 2006 through 12 September 2006, p. 843-846
Paper in proceedings
2006

Ferroelectric thin films: Review of materials, properties, and applications

Nava Setter, D. Damjanovic, L. Eng et al
Journal of Applied Physics. Vol. 100 (5), p. 051606-1-46-
Journal article
2006

The Potential of Thin Film Ferroelectric Varactors for Applications in Large Microwave Arrays

Spartak Gevorgian, Andrei Vorobiev, Dan Kuylenstierna
Paper in proceedings
2006

The effect of interfacial transition layer on performance of thin film ferroelectric capacitors

Andrei Vorobiev, John Berge, Spartak Gevorgian
Paper in proceedings
2006

Ferroelectric devices and method relating thereto.

Spartak Gevorgian, E. Wikborg
Patent
2006

Tunable paraelectric films for millimeter wave & Terahertz applications

Spartak Gevorgian
Conference contribution
2006

Ba0.25Sr0.75TiO3 thin film varactors on SrRuO3 bottom electrode

Khaled Khamchane, Andrei Vorobiev, Tord Claeson et al
J. Appl. Phys. Vol. 99, p. 034103-
Journal article
2006

X-band left handed phase shifter using thin film Ba0.25Sr0.75TiO3 ferroelectric varactors

Dan Kuylenstierna, Eric Ash, Andrei Vorobiev et al
Conference Proceedings. 36th European Microwave Conference, 10-15 Sep. 2006, Manchester, UK, 2006, p. 847--50-
Paper in proceedings
2006

Thin film Ba0.25Sr0.75TiO3 varactors on Au bottom electrode for microwave applications

Andrei Vorobiev, John Berge, Spartak Gevorgian
Paper in proceedings
2006

The effect of SiO2, Pt and Pt/Au templates on microstructure and permittivity of Ba0:25Sr0:75TiO3 films

Pär Rundqvist, Andrei Vorobiev, Spartak Gevorgian
J. Appl. Phys. Vol. 100, p. 114116-
Journal article
2006

Ferroelectric devices and method relating thereto

Spartak Gevorgian, E. Wikborg
Patent application
2006

Large Signal Circuit Model of Parallel-Plate Ferroelectric Varactors

Pär Rundqvist, Andrei Vorobiev, Erik Kollberg et al
J. Appl. Phys.. Vol. 100, p. 074101-1
Journal article
2006

Microwave performance of varactors based on nanostructured BSTO films

Andrei Vorobiev, John Berge, Spartak Gevorgian
Paper in proceedings
2006

Ferroelectric thin-film based two-dimensional electromagnetic bandgap structures

U. Khan, G. Subramanyam, Spartak Gevorgian et al
Integrated Ferroelectrics. Vol. 86 (1), p. 67-76
Journal article
2006

Microwave performance of thin film ferroelectric varactors in the wide temperature range

Andrei Vorobiev, Spartak Gevorgian
Paper in proceedings
2006

Characterization Accuracy of High-Q Reactors Using Broadband Reflection/Transmission Measurement Techniques

Anatoli Deleniv, Spartak Gevorgian
Proceedings of EUMC 2006, 10-15 Sept. 2006, Manchester, UK, p. 975-979
Paper in proceedings
2006

A 2 GHz oscillator based on a solidly mounted thin film bulk acoustic wave resonator

Martin Norling, Johannes Enlund, Spartak Gevorgian et al
Journal of Logic and Computation. Vol. 1 (1), p. 1813-1816
Paper in proceedings
2005

Microwave performance of thin film ferroelectric varactors in the wide temperature range

Andrei Vorobiev, Spartak Gevorgian
Paper in proceedings
2005

GaAs varactor tuned filter for low power applications

Anders Eriksson, Anatoli Deleniv, Spartak Gevorgian
Microwave Symposium Digest, 2005 MTT-S international, p. 2211-2214
Journal article
2005

Microwave Loss Mechanisms in Ba0.25Sr0.75TiO3 Films

Andrei Vorobiev, Pär Rundqvist, Spartak Gevorgian
Materials Science and Engineering B. Vol. 118, p. 214-218
Journal article
2005

Open resonator technique for measuring multilayered dielectric plates

Anatoli Deleniv, Spartak Gevorgian
IEEE Transactions on Microwave Theory and Techniques. Vol. 53 (9), p. 2908-2916
Journal article
2005

Analysis of the influence of SrRuO3 buffer layer on ferroelectric varactors for multiplier applications

Pär Rundqvist, Andrei Vorobiev, Spartak Gevorgian et al
Paper in proceedings
2005

Composite Right/Left Handed Transmission LinePhase Shifter using Ferroelectric Varactors

Dan Kuylenstierna, Andrei Vorobiev, Spartak Gevorgian
Conference contribution
2005

Analysis of multiplier with a novel symmetric ferroelectric varactor

Pär Rundqvist, Andrei Vorobiev, Erik Kollberg et al
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

Ultrawide-band tunable true-time delay lines using ferroelectric varactors

Dan Kuylenstierna, Andrei Vorobiev, Peter Linner et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 53 (6, pt.2), p. 2164-70
Journal article
2005

Electronically scanning beamformers based on ferroelectric technology

Spartak Gevorgian, Ola Tageman, A. Derneryd
Frequenz. Vol. 59 (1-2), p. 40-48
Journal article
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

A balanced 23 GHz voltage-controlled oscillator based on ferroelectric varactors

Martin Norling, Andrei Vorobiev, Harald Jacobsson et al
Gigahertz 2005, p. 279-282
Paper in proceedings
2005

Component for electromagnetic waves and a method for manufacturing the same

Leif Bergstedt, Spartak Gevorgian, Marica Gustafsson
Patent application
2005

LTCC compatible ferroelectric phase shifters

Anatoli Deleniv, Spartak Gevorgian, Heli Jantunnen et al
Microwave Symposium Digest, 2005 MTT-S international. Vol. 1, p. 599-602
Journal article
2005

Techniques for microwave measurements of ferroelectric thin films and their associated error and limitations

P. K. Petrov, N. McN Alford, Spartak Gevorgian
Measurement Science and Technology. Vol. 16 (2), p. 583-589
Journal article
2004

Tunable ferroelectric resonator arrangement

Spartak Gevorgian, Anatoli Deleniv, Orest Vendik et al
Patent application
2004

Ferroelectric devices and method relating thereto.

Spartak Gevorgian, E. Wikborg
Patent application
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

Oscillator

Harald Jacobsson, Spartak Gevorgian, E. Wikborg
Patent application
2004

Integration of parallel-plate ferroelectric varactors with BCB-on-silicon microstrip circuits

Dan Kuylenstierna, Andrei Vorobiev, Spartak Gevorgian
2004 IEEE MTT-S International Microwave Symposium Digest, 6-11 June 2004. Vol. Vol.3, p. 1907-10
Paper in proceedings
2004

Non-destructive microwave characterization of ferroelectric films on conductive substrates

Pär Rundqvist, Andrei Vorobiev, Spartak Gevorgian et al
Integrated Ferroelectrics. Vol. 60, p. 1-19
Journal article
2004

Ba 0.25Sr 0.75TiO3 -metal microstructure, surface morphology and interfaces.

Pär Rundqvist, Andrei Vorobiev, Spartak Gevorgian
Paper in proceedings
2004

Microwave loss mechanisms in Ba0.25Sr0.75TiO3$ thin film varactors

Andrei Vorobiev, Pär Rundqvist, Spartak Gevorgian
Journal of Applied Physics. Vol. 96 (8), p. 4642-9
Journal article
2004

Silicon substrate integrated ferroelectric microwave components

Spartak Gevorgian, Andrei Vorobiev, Dan Kuylenstierna et al
Integrated Ferroelectrics. Vol. 66, p. 125-38
Journal article
2004

Large signal circuit model of parallel-plate ferroelectric

Pär Rundqvist, Andrei Vorobiev, Spartak Gevorgian
34th European Microwave Conference; London; United Kingdom; 12 October 2004 through 14 October 2004. Vol. 3, p. 1505-1508
Paper in proceedings
2004

Ferroelectrically tuneable delay lines

Dan Kuylenstierna, Andrei Vorobiev, Peter Linner et al
Conference Proceedings. 34th European Microwave Conference, 12-14 Oct. 2004. Vol. vol.1, p. 157-60
Paper in proceedings
2003

Multilayer balun transformer structure

Spartak Gevorgian, Chalotta Hedenes, Harald Jacobsson et al
Patent
2003

Tunable electromagnetic bandgap performance of coplanar waveguides periodically loaded by ferroelectric varactors

Dan Kuylenstierna, G. Subramanyam, Andrei Vorobiev et al
Microwave and Optical Technology Letters. Vol. 39 (2), p. 81-86
Journal article
2003

Correlation between microstructure, DC resistivity and magnetoresistance of SrRuO3 films

Khaled Khamchane, Zdravko Ivanov, Robert Gunnarsson et al
Materials Research Society Symposium - Proceedings,. Vol. 751, p. 67-71
Paper in proceedings
2003

Micro-strip circuit for loss reduction

Omid Aval, Håkan Berg, Spartak Gevorgian et al
Patent
2003

dc and microwave resistivities of SrRuO_3 films deposited on SrTiO_3

Pär Rundqvist, Andrei Vorobiev, Spartak Gevorgian et al
Journal of Applied Physics,. Vol. 93 (2), p. 1291-7
Journal article
2003

Optical electromagnetic wave generator

Spartak Gevorgian, Nils Calander, Mats Karlsson et al
Patent
2003

Electrically tunable device and a method relating thereto

E. Wikborg, Zdravko Ivanov, Peter Petrov et al
Patent
2003

Tunable electromagnetic bandgap structures based on ferroelectric films

Dan Kuylenstierna, Andrei Vorobiev, G. Subramanyam et al
2003 IEEE International Antennas and Propagation Symposium and USNC/CNC/URSI North American Radio Science Meeting, Jun 22-27 2003. Vol. 4, p. 879-882
Paper in proceedings
2003

Conduction and microwave loss mechanisms in Ba0.25Sr0.75TiO3 films

Andrei Vorobiev, Pär Rundqvist, Khaled Khamchane et al
Ferroelectric Thin Films XII, (Mater. Res. Soc. Symposium Proceedings). Vol. 784, p. 357-
Paper in proceedings
2003

Arrangement relating to conductor carriers and methods for the manufacture of such carriers.

Leif Bergstedt, Per Ligander, Spartak Gevorgian
Patent
2003

Tuneable Electromagnetic Bandgap structures based on Ba/sub 0.25/Sr/sub 0.75/TiO/sub 3/ parallel-plate varactors on silicon Coplanar Waveguides

Dan Kuylenstierna, Andrei Vorobiev, G. Subramanyam et al
33rd European Microwave Conference Proceedings, 7-9 Oct. 2003. Vol. Vol.3, p. 1111-14
Paper in proceedings
2003

Microwave power dependent properties of ferroelectric varactors.

Pär Rundqvist, Andrei Vorobiev, Spartak Gevorgian
Paper in proceedings
2003

Silicon substrate integrated high Q-factor parallel-plate ferroelectric varactors for microwave/millimeterwave applications

Andrei Vorobiev, Pär Rundqvist, Spartak Gevorgian et al
Appl. Phys. Lett.. Vol. 83 (15), p. 3144-6
Journal article
2002

SrTiO3 thin film varactors on Si for microwave applications

Andrei Vorobiev, Pär Rundqvist, Spartak Gevorgian
Mat. Res. Soc.. Vol. 748, p. 477-
Paper in proceedings
2002

Parallel plate microwave devices having tapered current interrupting slots

Erik F. Carlsson, Spartak Gevorgian, E. Wikborg
Patent
2002

Micro-electromechanical arrangement

Arne Alping, Spartak Gevorgian
Patent
2002

SrTiO3 thin film varactors on Si for microwave applications

Andrei Vorobiev, Pär Rundqvist, Khaled Khamchane et al
Journal article
2002

Antenna arrangement and a communication arrangement comprising the same

Leif Bergstedt, Spartak Gevorgian, Thomas Lewin et al
Patent application
2002

Arrangement mounted on a printed circuit board and method of producing such an arrangement

Leif Bergstedt, Spartak Gevorgian
Patent application
2002

Microwave properties of SrTiO3/SrRuO3/CeO2/YSZ heterostructure on low-resistivity silicon

Andrei Vorobiev, Pär Rundqvist, Spartak Gevorgian
Paper in proceedings
2002

The double loop hysteresis in DC dependent dielectric permittivity of SrTiO3

Spartak Gevorgian, Anders Eriksson, Anatoli Deleniv
Journal of Applied Physics. Vol. 92, p. 6165-6171
Journal article
2002

Tunable high Tc superconductive microwave devices

Spartak Gevorgian, Erik Kollberg, Orest Venndik et al
Patent
2002

Multilayer balun transformer structure

Spartak Gevorgian, Charlotta Hedenes, Harald Jacobsson et al
Patent
2002

Arrangement for more even current distribution in a transmission line

Spartak Gevorgian, Leif Bergstedt
Patent
2002

Low-frequency and microwave performances of laser-ablated epitaxialNa 0.5 K 0.5 NbO 3 films on high-resistivitySiO 2 /Si substrates

Saeed Abadei, Spartak Gevorgian, Alex Grishin
Journal of Applied Physics. Vol. 91, p. 2267-
Journal article
2001

Do we really need ferroelectrics in paraelectric phase only in electrically controlled microwave devices?

Spartak Gevorgian, Erik Kollberg
IEEE Transactions on Microwave Theory and Techniques. Vol. 49 (11), p. 2117 - 2124
Journal article
2001

Electrically tunable device and a method relating thereto

E. Wikborg, Zdravko Ivanov, Peter Petrov et al
Patent application
2001

Arrangement and method relating to coupling of signals to/from microwave devices

E. Wikborg, Erik F. Carlsson, Spartak Gevorgian
Patent
2001

Mode chart of electrically thin parallel-plate circular resonators

Anders Eriksson, Peter Linner, Spartak Gevorgian
IEE Proceedings: Microwaves, Antennas and Propagation. Vol. 148 (1), p. 51 - 55
Journal article
2001

DC field induced antiferroelectric phase transition in bulk, single crystal strontium titanate

Spartak Gevorgian, Anders Eriksson, Peter Petrov et al
Integrated Ferroelectrics. Vol. 33 (1-4), p. 323-329
Journal article
2001

High-q tank

Håkan Berg, Spartak Gevorgian, Harald Jacobsson
Patent application
2001

Optical electromagnetic wave generator

Spartak Gevorgian, Nils Calander, Mats Karlsson et al
Patent application
2001

Low frequency characterisation of laser ablation deposited thin Na0.5K0.5NbO3 (NKN) films for microwave application

Saeed Abadei, C Cho, Alex Grishin et al
Integrated Ferroelectrics. Vol. 263 (1), p. 173-179
Journal article
2001

Microstrip arrangement

Leif Bergstedt, Spartak Gevorgian
Patent
2001

DC field dependent properties of Na0.5K0.5NbO3/SiO2/Si structures at millimeter-wave frequencies

Saeed Abadei, Spartak Gevorgian, C Cho et al
Applied Physics Letters. Vol. 78 (13), p. 1900 - 1902
Journal article
2001

Microwave properties of tunable capacitors basee on magnetron sputtered ferroelectric Na0.5K0.5NbO3 film on low and high resistivity silicon substrates

Saeed Abadei, Spartak Gevorgian, Veronica Kugler et al
Integrated Ferroelectrics. Vol. 39 (1-4), p. 359-366
Journal article
2001

Strain induced ferroelectrosity in epitaxial SrTiO3 films

Spartak Gevorgian, Peter Petrov, Saeed Abadei et al
Integrated Ferroelectrics. Vol. 33 (1-4), p. 311-321
Journal article
2001

Tailoring the temperature coefficient of capacitance in ferroelectric varactors

Spartak Gevorgian, Peter Petrov, Zdravko Ivanov et al
Applied Physics Letters. Vol. 79 (12), p. 1861 - 1863
Journal article
2001

Balanced inductor

Spartak Gevorgian, Bertil Hanson
Patent
2001

Analytic approximation for open-end capacitance in symmetric coplanar-strip waveguides

Spartak Gevorgian, Peter Linner, Erik Kollberg
Electronics Letters. Vol. 37 (20), p. 1226 - 1228
Journal article
2000

Na0.5K0.5NbO3/SiO2/Si Thin Film Varactor

Coong-Rae Cho, Jung-Hyuk Koh, Alex Grishin et al
Applied Physics Letters. Vol. 76, p. 1761-
Journal article
2000

X-ray study of SrTiO3 thin films in multilayer structures

Peter Petrov, Zdravko Ivanov, Spartak Gevorgian
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing. Vol. 288 (2), p. 231-234
Journal article
2000

The effect of longitudinal substrate currents on the losses in silicon substrate coplanar-strip and coplanar waveguides

Håkan Berg, Spartak Gevorgian
International Journal of RF and Microwave Computer-Aided Engineering. Vol. 10 (5), p. 284-288
Journal article
2000

Modeling gap discontinuity in coplanar waveguide using quazi-static spectral domain method

Anatoli Deleniv, Irina Vendik, Spartak Gevorgian
International Journal of RF and Microwave Computer-Aided Engineering. Vol. 10 (3), p. 150-158
Journal article
2000

Antenna arrangement

Leif Bergstedt, Spartak Gevorgian
Patent
2000

Arrangement and method relating to filtering of signals

Erik F. Carlsson, Spartak Gevorgian, Erik Kollberg et al
Patent
1999

Conformal mapping of the field and charge distributions in multilayered substrate CPWs

Erik F. Carlsson, Spartak Gevorgian
IEEE Transactions on Microwave Theory and Techniques. Vol. 47 (8), p. 1544 - 1552
Journal article
1999

Effect of YBCO electrodes on the properties of STO based varactors

Peter Petrov, Zdravko Ivanov, Spartak Gevorgian
Institute of Physics Conference Series. Vol. 2 (167), p. 105-108
Magazine article
1999

Electric field dependent microwave losses in KTaO3 single crystal with YBa2CU3O7-x electrodes

Erik F. Carlsson, E. Wikborg, Spartak Gevorgian
Ferroelectrics, Letters Section. Vol. 25 (5-6), p. 141-152
Journal article
1998

Tunable microwave devices based on bulk and thin film ferroelectrics

Spartak Gevorgian, Erik Carlsson, E. Wikborg
Integrated Ferroelectrics. Vol. 22 (1-4), p. 245-257
Journal article
1998

Fabrication and investigation of YBa2Cu3O7-delta/Ba0.05Sr0.95TiO3 thin film structures for voltage tunable devices

R Chakalov, Zdravko Ivanov, Iouri Boikov et al
Physica C: Superconductivity and its Applications. Vol. 308 (3-4), p. 279-288
Journal article
1998

Surface impedance of silicon substrates and films

Spartak Gevorgian
International Journal of RF and Microwave Computer-Aided Engineering. Vol. 8 (6), p. 433-440
Journal article
1998

Growth and field dependent dielectric properties of epitaxialNa 0.5 K 0.5 NbO 3 thin films

Xin Wang, Ulf Helmersson, Sveinn Olafsson et al
Applied Physics Letters. Vol. 73, p. 927-
Journal article
1997

HTS/ferroelectric devices for microwave applications

Spartak Gevorgian, Erik F. Carlsson, Staffan Rudner et al
IEEE Transactions on Applied Superconductivity. Vol. 7 (2), p. 2458 - 2461
Journal article
1997

Effect of enhanced current crowding in a CPW with a thin ferroelectric film

Erik F. Carlsson, Spartak Gevorgian
Electronics Letters. Vol. 33 (2), p. 145-146
Journal article
1997

Experimental Study of Thin Film HTS/Ferroelectric CPW Phase Shifters for Microwave Applications

Erik F. Carlsson, Peter Petrov, R Chakalov et al
Institute of Physics Conference Series. Vol. 158, p. 339-342
Journal article
1997

Simple and accurate dispersion expression for the effective dielectric constant of coplanar waveguides

Spartak Gevorgian, Torsten Martinsson, Anatoli Deleniv et al
IEE Proceedings: Microwaves, Antennas and Propagation. Vol. 144 (2), p. 145-148
Journal article
1997

Optically Controlled Semiconductor Coplanar-Strip Waveguide Attenuator/Modulator: Design Considerations

Spartak Gevorgian, Erik Kollberg
Journal on Communications (Hungary). Vol. XLVIII, p. 18-21
Journal article
1996

CAD Model of a Gap in a Coplanar Waveguide

Spartak Gevorgian, Anatoli Deleniv, Torsten Martinsson et al
International Journal of Microwave and Millimeter-Wave Computer-Aided Engineering. Vol. 6 (5), p. 369-377
Journal article
1996

Modelling of thin-film HTS/ferroelectric interdigital capacitors

Spartak Gevorgian, Erik F. Carlsson, Staffan Rudner et al
IEE Proceedings: Microwaves, Antennas and Propagation. Vol. 143 (5), p. 397 - 401
Journal article
1996

CAD models for multilayered substrate interdigital capacitors

Spartak Gevorgian, Torsten Martinsson, Peter Linner et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 44 (6), p. 896 - 904
Journal article
1996

Lower order modes of YBCO/STO/YBCO circular disk resonators

Spartak Gevorgian, Erik F. Carlsson, Peter Linner et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 44 (10), p. 1738 - 1741
Journal article
1995

Fundamental TM Mode of a Superconducting Parallel Plate Waveguide

Spartak Gevorgian, Erik F. Carlsson, E. Wikborg
Institute of Physics Conference Series. Vol. 148 (2), p. 1167-1170
Journal article
1995

CAD Models for Shielded Multilayered CPW

Spartak Gevorgian, Peter Linner, Erik Kollberg
IEEE Transactions on Microwave Theory and Techniques. Vol. 43 (4), p. 772-779
Journal article
1995

Effects of degraded edges in strips of high‐temperature superconducting films at microwave frequencies

Spartak Gevorgian, Erik F. Carlsson, Eva Olsson
Applied Physics Letters. Vol. 67, p. 1615-
Journal article
1995

Single-Step Buried Waveguides in Glass by Field Assisted Copper Ion Exchange

Spartak Gevorgian
Electronics Letters. Vol. 26 (1), p. 38 - 39
Journal article
1995

1 GHz tunable resonator on bulk single crystal SrTiO3 plated with YBa2Cu3O7-x films

Orest Vendik, Erik Kollberg, Spartak Gevorgian et al
Electronics Letters. Vol. 31 (8), p. 654 - 656
Journal article
1995

Effects of package width on K-band high-temperature superconducting filters

Erik F. Carlsson, Spartak Gevorgian, Peter Linner
Microwave and Optical Technology Letters. Vol. 10 (6), p. 315-317
Journal article
1994

CAD Model for Microstrips on r-cut Sapphire Substrates

Irina Vendik, Orest Vendik, Spartak Gevorgian et al
International Journal of Microwave and Millimeter-Wave Computer-Aided Engineering. Vol. 4 (4), p. 374-383
Journal article
1994

Short Circuit Photocurrent Controlled Microwave p-i-n Diode Switch

Spartak Gevorgian
Microwave and Optical Technology Letters. Vol. 7 (12), p. 553-555
Journal article
1994

Analytical models for shielded multilayered CPW

Spartak Gevorgian, Peter Linner, Erik Kollberg
24th European conference, Microwave. Vol. 1, p. 263-267
Paper in proceedings
1994

Basic characteristics of two layered substrate coplanar waveguides

Spartak Gevorgian
Electronics Letters. Vol. 30 (15), p. 1236 - 1237
Journal article
1994

Optical Response of a YBCO Coplanar Waveguide Resonator

Erik F. Carlsson, Spartak Gevorgian, Erik Kollberg et al
Proc. IEEE Topical Meeting on Optical and Microwave Interactions, p. 195-197
Paper in proceedings
1994

Optical Triggering of a Planar p+-p-p+ Device at Microwave Frequencies

Spartak Gevorgian
Proc. IEEE Topical Meeting on Optical and Microwave Interactions (OMI 94), p. 175-177
Paper in proceedings
1994

Microwave Performance of a HTSC Coplanar-Strip Waveguide

Spartak Gevorgian, Erik Kollberg, Orest Vendik
Microwave Performance of a HTSC Coplanar-Strip Waveguide. Vol. 1, p. 505 - 510
Paper in proceedings
1994

Effective Dielectric Permittivity of r-Cut Sapphire Microstrip

Irina Vendik, Orest Vendik, Spartak Gevorgian
Microwave Conference, 1994. 24th European. Vol. 1, p. 395 - 400
Paper in proceedings
1994

Critical Limitations in Low-Loss Narrow-Band filter Design

Spartak Gevorgian, Sergay Galchenko, Dimity Kaparkov et al
Microwave Conference, 1994. 24th European. Vol. 1, p. 522 - 527
Paper in proceedings
1994

Electrically Controlled HTSC/Ferroelectric Coplanar Waveguide

Spartak Gevorgian, Dimity Kaparkov, Orest Vendik
Microwave and Optical Technology Letters. Vol. 141 (6), p. 501 - 503
Journal article
1992

Design Considerations for an Optically Exited Semiconductor Microstrip Gap at Microwave Frequencies

Spartak Gevorgian
IEE Proceedings: Optoelectronics. Vol. 139 (2), p. 153 - 157
Journal article
1991

Net Electrical Power Consumption in a Microwave Fiber Optical Transmission Line

Spartak Gevorgian, Ilia Barskii, V Kuznetsov
Radioelectronica, Izvestia Vuzov (in Russian). Vol. 3, p. 73-76
Journal article
1991

The Optical Power Distribution and Scattering Losses in Symmetric Channel Waveguide X-Junction

Spartak Gevorgian, Ashot Hovsepian
Optical and Quantum Electronics. Vol. 23, p. 649-656
Journal article
1991

Microwave Losses in a Fibre Optical Transmission Line

Spartak Gevorgian
Electron Technology. Microwaves (in Russian). Vol. 407 (3), p. 41-42
Journal article
1991

Buried Waveguides in Glass Made by Electrostimulated Ion Exchange

Spartak Gevorgian, G Baghdasarian
Zurnal Techn. Phys., ZTF, (in Russian). Vol. 61 (1), p. 190-192
Journal article
1990

Asymmetric Coplanar-Strip Transmission Lines for MMIC and Integrated Optic Applications

Spartak Gevorgian, Igor Mironenko
Electronics Letters. Vol. 26 (22), p. 16 - 1918
Journal article
1990

Optics Control Microwaves. The Next Step

Spartak Gevorgian
Microwave Conference, 1990. 20th European. Vol. 2, p. 1603 - 1608
Paper in proceedings
1990

Microwave Conductivity of Optically Excited Gap in a Semiconductor Microstrip

Spartak Gevorgian
Electronics Letters. Vol. 26 (22), p. 1921 - 1922
Journal article
1990

Nonlinear absorption in the Glasses Doped by CdS

Spartak Gevorgian, V Nikonorov
Pisma v JTF (in Russian). Vol. 16 (3), p. 32-35
Journal article
1990

Fibre Optical Phased Arrays

Irina Vendik, Spartak Gevorgian, Georgy khiza
Zarubeznaya Radioelektronika (USSR), p. 86-93
Journal article
1990

Planar Optical Waveguide in K8 Glass Made by Electromigration from Copper Films

Spartak Gevorgian
Physics and Chemistry of Glass (in Russian). Vol. 16 (3), p. 489-491
Journal article
1989

Float Glass: an Industrial Substrate for Integrated Optics

Spartak Gevorgian, Marine Zabunyan, G Vrtanesyan
Optical and Quantum Electronics. Vol. 21, p. 307-319
Journal article
1989

Integrated Optical X-Junctions

Spartak Gevorgian, Ashot Hovsepyan, Rafael Kazaryan
Zarubeznaya Radioelektronika (Review article, in Russian) (3), p. 63-70
Journal article
1988

Local Parameter Measurements of Polymer Films

Spartak Gevorgian, Aram Petrosyan, Marine Zabunyan
Vysokomoleculyarnie Soedineniya /Russian. Vol. T.(A) XXX, p. 1556-1558
Journal article
1988

Coupling Among Waveguides of Small Spacing

Spartak Gevorgian, Ashot Hovsepian
Electronics Letters. Vol. 24 (13), p. 814 - 815
Journal article
1987

Optically Controlled Microwave Semiconductor Devices

Irina Vendik, Spartak Gevorgian, Georgy khiza
Zarubeznaya Radioelektronika (Review article, in Russian), p. 10-22
Journal article
1980

Reverse Biased Equivalent Microwave Parameters of p+-p-n+ (p+-n-n+) Structures

Irina Vendik, Spartak Gevorgian, Georgy khiza
Journ. Electron Technology. Microwaves, (in Russian) (10), p. 14-27
Journal article