Journal ArticleDOI
Advanced mHEMT MMICs for 220 GHz high‐resolution imaging systems
Sebastien Chartier,Axel Tessmann,Arnulf Leuther,Rainer Weber,Ingmar Kallfass,Michael Schlechtweg,Stephan Stanko,Helmut Essen,Oliver Ambacher +8 more
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TLDR
In this article, the development of advanced millimeter-wave monolithic integrated circuits for application in active and passive high-resolution imaging systems operating beyond 200 GHz is presented, where a wideband 210 GHz Low Noise Amplifier has been successfully realized using one of their three metamorphic high electron mobility transistor (mHEMT) technologies in combination with grounded coplanar circuit topology (GCPW).Abstract:
The development of advanced millimeter-wave monolithic integrated circuits for application in active and passive high-resolution imaging systems operating beyond 200 GHz is presented. A wideband 210 GHz Low Noise Amplifier has been successfully realized using one of our three metamorphic high electron mobility transistor (mHEMT) technologies in combination with grounded coplanar circuit topology (GCPW). Additionally, a 200 GHz voltage controlled oscillator (VCO) MMIC demonstrating good output power over a wide bandwidth was fabricated, using our 100 nm mHEMT technology. Finally, a high resolution 220 GHz radiometer was realized and shows very promising performance. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)read more
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Journal ArticleDOI
Improvement in RF performance of 40-nm InAs-channel based HEMTs using Pt gate sinking with two-step recess processes technology
TL;DR: In this article, a 40-nanometer InAs HEMT device fabricated by two-step recess and Pt-buried gate was demonstrated for low-noise and low-power millimeter wave applications.
Proceedings ArticleDOI
A novel THz-enhanced dipole antenna using second-order high impedance surface resonance for MM imaging and sensing
TL;DR: In this article, an improved technique is presented to enhance Terahertz (THz) and millimeter wave (MMW) On-Chip antenna performance on low-resistive silicon substrates using High-Impedance Surfaces (HIS).
Dissertation
G-band waveguide to microstrip transition for MMIC integration
TL;DR: In this article, the authors presented an overview of the electromagnetic properties of the atmosphere at millimetre-wave (MMW) frequencies and their use for passive MMW imaging applications.