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A compact W-band dual-channel receiver module

Ein kompaktes W-Band Zweikanal-Empfängermodul
: Tessmann, A.; Kuri, M.; Riessle, M.; Massler, H.; Zink, M.; Reinert, W.; Bronner, W.; Leuther, A.


Sowers, J. ; IEEE Microwave Theory and Techniques Society:
IEEE MTT-S International Microwave Symposium Digest 2006. CD-ROM : San Francisco, California, June 11 - 16, 2006
Piscataway, NY: IEEE, 2006
ISBN: 0-7803-9542-5
International Microwave Symposium (IMS) <2006, San Francisco/Calif.>
Conference Paper
Fraunhofer IAF ()
MHEMT; metamorphic high electron mobility transistor; metamorpher Transistor mit hoher Elektronenbeweglichkeit; W-Band; heterodyne receiver; Heterodyn-Empfänger; MMIC; cascode; Kaskode; coplanar waveguide; Koplanarleitung; low-noise amplifier (LNA); rauscharmer Verstärker; balanced mixer; balancierter Mischer

A very compact W-band dual-channel receiver module has been developed for use in active and passive high-resolution imaging systems. The WR-10 waveguide module contains two fully integrated heterodyne receiver MMICs which have been realized using a 0.1 µm InAlAs/InGaAs based depletion type metamorphic high electron mobility transistor (MHEMT) technology in combination with conductor-backed coplanar circuit topology (CBCPW) and cascode transistors, thus leading to a very low noise figure and high conversion gain at millimeter-wave frequencies. The MMICs consist of a two-stage low noise amplifier, a balanced resistive HEMT mixer, and a single-stage local oscillator (LO) buffer amplifier. To divide the LO-signal a magic-T was embedded in the WR-10 waveguide module. The assembled dual-channel front end achieved a conversion gain of 7 dB and a noise figure of 4 dB over the frequency range from 75 to 100 GHz with an LO-power of only -5 dBm.