Vessen Vassilev
In 1995 Vessen Vassilev received a M.Sc. degree in radio communications from Sofia Technical University, Bulgaria. In 1998 he obtained a M.Sc. degree in digital communications from Chalmers university of technology in Gothenburg. In 2003 he got a Ph.D. degree from the Department of Radio and Space Science at Chalmers. From 1998 to 2008, Vessen was involved in the development of low-noise cryogenic millimeter-wave receivers for applications in radio astronomy and space sciences. Instruments designed by him have been in operation at the Atacama Pathfinder Experiment (APEX) Telescope in Chile and Onsala Space Observatory in Sweden. In 2008, he joined the Microwave Electronics Laboratory at the Department of Microtechnology and Nanoscience, Chalmers University. In 2009 he was granted the title of Associate Professor (Oavlönad Docent) at Chalmers. His current research interests are in the development of Monolithic Microwave Integrated Circuits (MMIC) for frequencies beyond 100GHz. In addition Vessen is responsible for the development of packaging technologies for the MMICs that are designed in the laboratory. Another area of interest is the development of millimeter-wavelength sensors for various applications. His recent work includes the development of an automotive polarimetric radar for characterization of road surfaces. The sensor was recently tested in real traffic conditions and was able to differentiate road surfaces in different conditions.
Visar 113 publikationer
Road Surface Characterization Using a 77-81 GHz Polarimetric Radar
Wideband Reflection-Type p-i-n Diode Phase Shifters in GaAs MMIC Technology at W-Band
Integrating InP MMICs and Silicon Micromachined Waveguides for sub-THz Systems
Substrate-Less Vertical Chip-to-Waveguide Transition for W-Band Array Antenna Integration
Multilayer Dry Film Photoresist Fabrication of a Robust >100 GHz Gap Waveguide Slot Array Antenna
Dual-Polarised Radiometer for Road Surface Characterisation
Road Surface Recognition at mm-Wavelengths Using a Polarimetric Radar
G-band Power Amplifiers in 130 nm InP Technology
Compact Low-Loss Chip-to-Waveguide and Chip-to-Chip Packaging Concept Using EBG Structures
A 55-105 GHz PIN Diode SPDT Switch
G-band Frequency Converters in 130-nm InP DHBT Technology
D-band waveguide-to-microstrip transition implemented in eWLB packaging technology
Packaging Technique of Highly Integrated Circuits Based on EBG Structure for +100 GHz Applications
Oil, water, and ice detection on road surfaces with a millimeter-wave radiometer
Nongalvanic Generic Packaging Solution Demonstrated in a Fully Integrated D-Band Receiver
Road Surface Characterization Using a Radiometer at 100 GHz
Demonstration of +100-GHz Interconnects in eWLB Packaging Technology
A Directly Matched PA-Integrated K-band Antenna for Efficient mm-Wave High-Power Generation
F-band Low-loss Tapered Slot Transition for Millimeter-wave System Packaging
An E-band Compact Frequency Division Duplex Radio Front-end Based on Gap Waveguide Technology
A 90-140 GHz, High Power Frequency Source Packaged in a Self-aligned Waveguide Module
PCB Based UWB mm-Wave Smart Capped Bowtie Array for 5G Communication Systems
Spectrum Efficient D-band Communication Link for Real-time Multi-gigabit Wireless Transmission
A 110-170 GHz transceiver in 130 nm SiGe BiCMOS technology for FMCW applications
A Low-loss D-band Chip-to-Waveguide Transition Using Unilateral Fin-line Structure
A +14.2 dBm, 90–140 GHz Wideband Frequency Tripler in 250-nm InP DHBT Technology
Bandwidth Investigation on Half-Height Pin in Ridge Gap Waveguide
A 143 GHz InP-based radio link characterized in long-term outdoor measurement
A Non-galvanic D-band MMIC-to-Waveguide Transition Using eWLB Packaging Technology
E-band 3-D metal printed wideband planar horn array antenna
Wideband cavity-backed slot subarray with gap waveguide feed-network for D-band applications
Silicon Taper Based D-Band Chip to Waveguide Interconnect for Millimeter-Wave Systems
D-band Waveguide Transition Based on Linearly Tapered Slot Antenna
Polymer Gap Adapter for Contactless, Robust, and Fast Measurements at 220-325 GHz
A compact receiver system for simultaneous measurements of mesospheric CO and O3
A multi-layer gap waveguide array antenna suitable for manufactured by die-sink EDM
AMC pin waveguide flange for screw redundant millimeter and submillimeter measurements
A mm-Wave Sensor for Remote Measurement of Moisture in Thin Paper Layers
A 110-170-GHz Multi-Mode Transconductance Mixer in 250-nm InP DHBT Technology
Imaging front-end for thermal detection using an InP DHBT process
Design and Characterization of H-Band (220-325 GHz) Amplifiers in a 250-nm InP DHBT Technology
MICROMACHINED GAP WAVEGUIDE DEVICES FOR ABOVE 100 GHZ
140-220 GHz Imaging Front-end Based on 250 nm InP/InGaAs/InP DHBT Process
Micromachined Ridge Gap Waveguide and Resonator for Millimeter-Wave Applications
Multifunction low noise millimeterwave MMICs for remote sensing
IMAGINE project - A low cost, high performance, monolithic passive mm-wave imager front-end
H-band MMIC amplifiers in 250 nm InP DHBT
Micromachined ridge gap waveguide for sub millimeter and millimeter wave applications
A varactor model including valanche noise source for VCOs phase noise simulation
Design of Micromachined Ridge Gap Waveguides for Millimeter-Wave Applications
Integrated front-ends up to 200 GHz
MMIC-Based Components for MM-Wave Instrumentation
MMIC-based receivers for mm-wave radiometry
Superconducting IF biasing circuit for low-noise cryogenic applications
Terahertz Instrumentation For Radio Astronomy
On the status of Low Noise Millimeterwave MMIC Receivers
Integrated receivers up to 220 GHz utilizing GaAs-mHEMT technology
Optics Design and Verificatgion for the APEX Swedish Heterodyne Facility Instrument (SHeFI)
A Swedish heterodyne facility instrument for the APEX telescope
Optics Design and Verification for the APEX Swedish Heterodyne Facility Instrument (SHeFI)
Low-Noise Cryogenic Amplifier built using Hybrid MMIC-like / TRL Technique
ALMA Band 5 (163-211 GHz) Sideband Separating Mixer Design
Design and Characterization of a 211-275 GHz Sideband Separating Mixer for the APEX Telescope
ALMA Band 5 (163-211 GHz) sideband separation mixer design
A method for detection of powder materials in metallic hollow structures using microwaves
A 0.5 THz Sideband Separation SIS Mixer for APEX Telescope
A 211-275 GHz Sideband Separating SIS Mixer for APEX
Facility Heterodyne Receiver for the Atacama Pathfinder Experiment Telescope
A sideband separation SIS mixer for 275-370 GHz for the APEX telescope
Superconducting microstrip line model studies at millimetre and sub-milimetre waves
A 385-500 GHz SIS Mixer for APEX Telescope
APEX - The Atacama Pathfinder Experiment
Design of a Sideband Separating Receiver for 500 GHz
A 0.8 mm heterodyne facility receiver for the APEX telescope
A 279-381 GHz SIS Receiver for the APEX Telescope
Cryogenic LNA Characterization with SIS Junction as Noise Source
A Novel Design of Broadband Waveguide Directional Couplers and 3-dB Hybrids
A Vector Beam Measurement System for 211-275 GHz
Heterodyne Single-Pixel Facility Instrumentation for APEX Telescope
Sideband Separating SIS Mixer with On-Substrate LO-Injection Circuitry
A Vector Beam Measurement System for 211-275 GHz
High Quality Microstrip Termination for MMIC and Millimeter-Wave Applications
A 275-370 GHz Receiver SIS Mixer With Novel Probe Structure
A Sideband Separating Mixer for 85-115 GHz
High Performance of Resistive Thin-film Termination for Microstrip Lines
Performance of a Sideband Separating SIS Mixer for 85-115 GHz
Design and Characterization of a Sideband Separating SIS Mixer for 85-115 GHz
A 275-370 GHz SIS Mixer for the APEX Telescope
Superconducting microstrip line models at millimeter and sub-millimeter waves and their comparison
Development of a Sideband Separating SIS Mixer Technology for MM-Wavelengths
A New 3 dB Power Divider for MM Wavelengths
Development of components for mm-wave radio astronomy instrumentation / Vessen V. Vassilev
Design and Performance of a 3.4 to 4.6 GHz Active Equalizer with Controlled Gain Slope
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Visar 4 forskningsprojekt
Antenna technologies for beyond 5G Wireless Communication
Cost-Effective Receivers for Sensing Beyond 100 GHz