Niklas Rorsman is a Research Professor at the Microwave Electronics group, part of the Department of Microtechnology and Nanoscience at Chalmers University of Technology . His work focuses on advanced semiconductor devices, particularly gallium nitride (GaN) and silicon carbide (SiC) high-electron-mobility transistors (HEMTs) for microwave and cryogenic applications. Expertise : Semiconductor device physics, microwave electronics, cryogenic transistor characterization Key Technologies : GaN HEMTs, SiC MESFETs, graphene FETs Rorsman's research investigates trapping effects, thermal management, and material optimization in GaN/SiC devices. Recent studies explore field plates for cryogenic stability, recessed ohmic contacts, and high-κ dielectric interfaces. His publications demonstrate a focus on improving device linearity, noise performance, and reliability through structural and process innovations. Selected trends in his work include: Cryogenic GaN HEMTs with superconducting Nb gates Buffer-free AlGaN/GaN heterostructures for high breakdown voltage Graphene integration for millimeter-wave communication systems Advanced SiNx passivation and gate stack engineering Contact: niklas.rorsman@chalmers.se
Artem Vilenskiy is a researcher in the Antenna Systems group at Chalmers University of Technology since 2019. His work focuses on developing active integrated array antenna concepts, 100+ GHz beam-steerable antennas and circuits, MMIC design, computational electromagnetics methods for radiation and scattering problems, and collaboration with Chalmers industrial partners. His educational background includes: MSc Degree (Specialist) in Electrical Engineering from Bauman Moscow State Technical University (BMSTU) in 2011 PhD Degree (Eng.) in "Antennas, Microwave Devices and Its Technology" from BMSTU in 2014 Dr. Vilenskiy's research spans multiple cutting-edge areas in microwave and antenna engineering, with particular emphasis on millimeter-wave and sub-THz frequency ranges. He specializes in reconfigurable intelligent surfaces (RIS), beam-steering technologies, and integrated antenna solutions for next-generation wireless communication systems. His work bridges theoretical electromagnetics with practical implementation challenges, often involving close collaboration with industry to address real-world telecommunications and radar applications. His expertise encompasses both novel antenna architecture design and associated microwave integrated circuits, with significant contributions to mmWave phased arrays and wireless power transfer systems. Analysis of his recent publications reveals a strong and consistent focus on millimeter-wave antenna systems, particularly in developing reconfigurable intelligent surfaces for 5G/6G applications, advanced beamforming techniques, and innovative antenna array architectures. His research spans frequencies from W-band (75-110 GHz) into the sub-THz range, addressing critical challenges in high-frequency wireless communication systems. The publications demonstrate a consistent emphasis on practical implementation, with many papers detailing circuit models, measurement techniques, and experimental validation of theoretical concepts across multiple application domains including satellite communications, wireless backhaul, and quantum computing interfaces. Dr. Vilenskiy has been actively involved in multiple significant research projects: Low-Thermal-Conductance and High-Density Microwave Interconnects for Cryogenic Quantum Computers (2024-2025) Energy Efficient, Beamforming Antenna-IC Integration Solutions for Future 100+GHz Telecommunication Systems (2021-2023) Antenna technologies for beyond 5G Wireless Communication (2020-2025) MyWave - Efficient Millimetre-Wave Communications for mobile users (2019-2023) Integrated Antenna Arrays (2016-2023) Prior to joining Chalmers, Dr. Vilenskiy worked at Samsung Research Institute Russia from 2011-2019 in various engineering roles including research engineer, expert engineer, and project leader. During 2015-2019, he also held a part-time Associate Professor position at BMSTU where he coordinated the MSc course "Applied Electrodynamics of Composite Media". His industry experience in mobile communication, automotive radar, robotics, and wireless power transfer provides valuable practical insights that complement his academic research in antenna systems.
Omid Habibpour is an Assistant Professor at the Microwave Electronics lab within Chalmers University of Technology. His research focuses on graphene-based devices and MMICs for high-frequency applications. B.Sc.: Electrical Engineering (Telecommunication Systems), Sharif University of Technology (2002) M.Sc.: Optical Telecommunication Systems (with honors), Amirkabir University of Technology (2004) His research spans Graphene Electronics , Microwave Engineering , and Terahertz Technology , emphasizing material characterization, device modeling, and MMIC design for high-data-rate communication systems. Recent work includes voltage-dependent mobility studies and zero transconductance resistance analysis in graphene FETs. Projects include the Graphene Core Project 3 (European Commission) and Quad Band Infrared Detector (VINNOVA). Publications trend toward graphene integration in microwave/THz systems and SiC substrate applications.
Christian Fager is a Full Professor at the Department of Microwave Electronics, Chalmers University of Technology, Sweden. He has been affiliated with Chalmers since completing his Ph.D. there in 2003. As Head of the Microwave Electronics Laboratory, his research focuses on nonlinear transistor modeling, energy-efficient power amplifier architectures, and distributed MIMO systems. He has co-invented 8 patents and published over 250 papers, including a seminal book on Nonlinear Transistor Model Parameter Extraction Techniques (Cambridge University Press, 2011). Dr. Fager holds editorial roles as Associate Editor of IEEE Microwave Magazine and member of the MTT-S Technical Coordination Committee on Wireless Communications. He is a Board Member of the European Microwave Association (EuMA) and has chaired multiple IEEE topical conferences. His awards include the Chalmers Supervisor of the Year (2018), inaugural Area of Advance Award (2010), and IEEE IMS Best Student Paper (2002). He leads research initiatives in distributed antenna systems, digital pre-distortion, and GaN/SiGe-based high-efficiency amplifiers, with projects involving testbed development for 5G/6G applications. His work bridges theoretical modeling and practical implementation in RF/microwave systems, emphasizing thermal and multi-physical simulation integration.
Professor Herbert Zirath is affiliated with the Department of Microtechnology and Nanoscience (MC2) at Chalmers University, Sweden , where he has held the Chair in High Speed Electronics since 1996. His research focuses on MMIC design for millimeterwave/sub-THz applications using III-V and silicon technologies, with current involvement in EU projects like 6GTandem , CoreNext , and TeraGreen targeting SiGe BiCMOS-based RFIC solutions for high data rate communication. Author/co-author of 530+ refereed papers Holder of 5 patents in high-frequency electronics Expert in semiconductor technologies: InP DHBT, GaN HEMT, SiGe BiCMOS Recent work includes polymer microwave fiber communication systems (e.g., 48 Gbps D-band links), sub-THz packaging solutions (EBG structures, glide-symmetric waveguides), and graphene FET applications in microwave detection. His team develops energy-efficient transceivers and low-loss chip-to-waveguide transitions for next-generation wireless infrastructure.
Wan-Chun Liao is a researcher at Chalmers University of Technology, affiliated with the Department of Electrical Engineering (E2) and specializing in Microwave Electronics. Their work focuses on millimeter-wave (mmWave) antenna design, phased array systems, and power amplifier integration, with applications in 5G/6G communication, automotive radar, and high-frequency RF technology. Research interests include: Millimeter-wave antenna arrays Contactless RF interconnects Power amplifier-MMIC co-design Wideband and ultra-wideband (UWB) feeds Electromagnetic coupling and interference Key projects involve deep integration of antenna arrays with semiconductor components (funded by VINNOVA, Saab, Ericsson, and Gapwaves AB) and collaborations with institutions like United Monolithic Semiconductors (UMS) and Kongsberg. Their publications highlight advancements in efficiency, linearity, and compact design for integrated RF systems.
Vessen Vassilev serves as an Associate Professor in the Department of Microtechnology and Nanoscience at Chalmers University of Technology, Sweden, where he has been affiliated since 1998. His academic journey began at Sofia Technical University before transitioning to Chalmers for advanced degrees and his current research leadership role. His educational qualifications include: M.Sc. in Radio Communications, Sofia Technical University, Bulgaria (1995) M.Sc. in Digital Communications, Chalmers University of Technology (1998) Ph.D., Department of Radio and Space Science, Chalmers University of Technology (2003) Professor Vassilev's research focuses on pioneering Monolithic Microwave Integrated Circuits (MMIC) for frequencies exceeding 100 GHz, with dual emphasis on circuit design and specialized packaging technologies. His work extends to millimeter-wavelength sensor development, most notably an automotive polarimetric radar system validated in real traffic conditions for road surface characterization—a breakthrough enabling differentiation between wet, icy, and dry pavement through advanced electromagnetic sensing. Analysis of his recent publications (2021-2025) reveals concentrated expertise in D-band/E-band communications, automotive radar applications, and innovative packaging solutions. Key thematic threads include road surface sensing using polarimetric techniques, high-speed wireless data transmission above 100 GHz, and gap waveguide antenna integration—demonstrating consistent contributions to next-generation millimeter-wave systems for both communication and safety-critical applications. He maintains active research within Chalmers' Microwave Electronics Laboratory, driving projects that bridge theoretical circuit design with practical implementation in radio astronomy heritage systems and emerging automotive technologies.
Syed Umer Abbas Shah is a Researcher at the Department of Micro and Nanosystems, KTH Royal Institute of Technology since May 2016. He holds a PhD in Microsystem Technology from KTH (2014), an MSc in Wireless Engineering from DTU (2007), and a BS in Engineering from GIK Institute (2003). His research focuses on millimeter-wave and terahertz micromachined components, including filters, phase shifters, waveguides, and antennas, emphasizing MEMS reconfigurability for tunability. He has received the IEEE MTT Graduate Fellowship Award (2014) and a best paper award at the 2010 Asia-Pacific Microwave Conference. His teaching includes courses such as 'Build your own Radar System' and 'Hands-On Microelectromechanical Systems Engineering.' Key research areas span MEMS-based high-frequency systems, with publications on sub-THz radar, waveguide components, and antenna design. His work addresses challenges in reconfigurable systems, beam steering, and high-frequency integration.
Gregor Lasser is an Assistant Professor at the Microwave Electronics department within Chalmers University of Technology. He holds a PhD and Dipl.-Ing. from the Vienna University of Technology (2008 and 2014, both with distinction). Prior to Chalmers, he served as a Research Associate (2015) and Assistant Research Professor (since 2017) at the University of Colorado, Boulder. Education: Dipl.-Ing., Vienna University of Technology, 2008 PhD, Vienna University of Technology, 2014 Research Interests: His work focuses on advanced microwave and RF systems, including broadband power amplifiers, analog linearization techniques, electronically augmented antennas, and active interference cancellation. Applications span 6G communication systems, reconfigurable intelligent surfaces (RIS), and energy-efficient GaN-based circuits. His research has been recognized with awards such as the EEEfCOM Innovation Award (2008), a departmental award for his doctoral work on automotive RFID sensors (2014), and the WAMICON Best Paper Award (2017). Key Publications & Trends: Recent work includes 6G power amplifier designs (2025), millimeter-wave RIS systems (2024), and dynamic supply modulation techniques (2023). His publications emphasize high-frequency circuits, GaN technologies, and energy-efficient architectures. Awards: Second Prize EEEfCOM Innovation Award (2008) Department Award for Doctoral Dissertation (2014) Best Paper Award, WAMICON Conference (2017) Advising & Grants: Gregor leads projects funded by VINNOVA (2023–2024) and collaborates on wideband receiver frontend development. His work integrates theoretical advancements with practical microwave engineering challenges. Labs/Teams: Part of the Microwave Electronics group at Chalmers, focusing on cutting-edge RF and millimeter-wave systems.
Mingquan Bao is an Adjunct Professor at the Department of Microwave Electronics/Microtechnology and Nanoscience, Chalmers University of Technology, and a Senior Specialist at Ericsson Research, Ericsson AB in Gothenburg, Sweden. His research focuses on high-frequency (>100 GHz) wireless transceivers critical to 6G networks, emphasizing power efficiency and prototype development. He holds a PhD in radar remote sensing from the University of Hamburg (1995). Education: BSc/MSc in Electrical Engineering, Zhejiang University (1985/1988) PhD in Radar Remote Sensing, University of Hamburg (1995) Research Highlights: Developed 140 GHz wireless links using D-band transceivers with novel frequency multipliers (20% power efficiency) Co-led projects with Chalmers’ Herbert Zirath group, yielding patents and prototypes Focus on 6G standardization through high-data-rate solutions (up to 1 Tbit/user) Awards & Patents: Recipient of IEEE’s 2016 Tatsuo Itoh Best Paper Award 48 granted US/European patents (VCOs, mixers, power amplifiers) and 10 pending Collaborations: Active with MC2/MEL groups at Chalmers, Ericsson Research, and institutions in Singapore/Germany. His work bridges academia-industry innovation in 6G hardware.
Mattias Thorsell is a Visiting Researcher at Chalmers University of Technology's Electronics Material and Systems unit, focusing on gallium nitride (GaN) high-electron-mobility transistors (HEMTs) for microwave and cryogenic applications. His work spans thermal analysis, trapping effects, and device modeling for power amplifiers and low-noise systems. Research Focus: GaN HEMTs, thermal coupling, cryogenic electronics, trapping effects, microwave device reliability Collaborations: Partnerships with VINNOVA, Swedish Research Council, European Commission projects Recent publications analyze dynamic thermal coupling in GaN MMICs, cryogenic trapping effects, and buffer-free heterostructure design. His work addresses challenges in power amplifier efficiency, low-temperature performance, and electrothermal calibration.
