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Metamorphic HEMT MMICs and modules for use in a high-bandwidth 210 GHz radar

Schaltkreise und Module basierend auf einer metamorphen HEMT Technologie für den Einsatz in einem 210 GHz Radarsystem mit hoher Bandbreite
 
: Tessmann, A.; Kallfass, I.; Leuther, A.; Massler, H.; Kuri, M.; Riessle, M.; Zink, M.; Sommer, R.; Wahlen, A.; Essen, H.; Hurm, V.; Schlechtweg, M.; Ambacher, O.

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IEEE journal of solid-state circuits 43 (2008), No.10, pp.2194-2205
ISSN: 0018-9200
English
Journal Article
Fraunhofer IAF ()
dual-gate FET; Dual-Gate-Transistor; frequency multiplier; Frequenzvervielfacher; G-Band; grounded coplanar waveguide; rückseitenmetallisierte Koplanarleitung; high-power amplifier; Leistungsverstärker; HPA; inverse synthetic aperture radar (ISAR); inverses synthetisches Apertur Radar; low-noise amplifier; rauscharmer Verstärker; LNA; metamorphic high electron mobility transistor; MHEMT; millimeter-wave monolithic integrated circuit; integrated circuit; MMIC; subharmonically pumped mixer; subharmonischer Mischer; W-Band

Abstract
In this paper, we present the development of advanced W-band and G-band millimeter-wave monolithic integrated circuits (MMICs) and modules for use in a high-resolution radar system operating at 210 GHz. A W-band frequency multiplier by six as well as a subharmonically pumped 210 GHz dual-gate field-effect transistor (FET) mixer and a 105 GHz power amplifier circuit have been successfully realized using our 0.1 µm InAlAs/InGaAs based depletion-type metamorphic high electron mobility transistor (mHEMT) technology in combination with grounded coplanar circuit topology (GCPW). Additionally, a 210 GHz low-noise amplifier MMIC was fabricated using our advanced 0.05 mum mHEMT technology. To package the circuits, a set of waveguide-to-microstrip transitions has been realized on 50 mum thick quartz substrates, covering the frequency range between 75 and 220 GHz. The presented millimeter-wave components were developed for use in a novel 210 GHz radar demonstrator COBRA-210, which delivers an instantaneous bandwidth of 8 GHz and an outstanding spatial resolution of 1.8 cm.

: http://publica.fraunhofer.de/documents/N-85608.html