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Enabling compact MMIC-based frontends for millimeter-wave imaging radar and radiometry at 94 and 210 GHz

Ermöglichung kompakter MMIC-basierter Frontends für bildgebendes Radar und Radiometrie bei 94 und 210 GHz
: Kallfass, I.; Tessmann, A.; Leuther, A.; Kuri, M.; Riessle, M.; Zink, M.; Massler, H.; Schlechtweg, M.; Ambacher, O.


Krapels, K.A.; Salmon, N. A. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Millimetre wave and terahertz sensors and technology : 17-18 September 2008, Cardiff, Wales, United Kingdom
Bellingham, WA: SPIE, 2008 (SPIE Proceedings Series 7117)
ISBN: 0-8194-7349-9
ISBN: 978-0-8194-7349-3
ISSN: 0277-786X
Paper 71170O
Conference "Millimetre Wave and Terahertz Sensors and Technology" <2008, Cardiff>
Fraunhofer IAF ()
millimeter wave integrated circuit; integrierte Millimeterwellenschaltung; imaging; Bildgebungsverfahren; radar; radiometry; Radiometrie; heterodyne receiver; Heterodynempfänger

We report on MMIC-based analog frontend components for imaging radar and radiometry at high millimeter-wave frequencies. The MMICs are realized in our metamorphic HEMT technology. In W-band, the focus is on analog frontends with multi-pixel capability. A compact four-channel receiver module based on four single-chip heterodyne receiver MMICs achieves a noise figure of 4.2 dB and a conversion gain of 7 dB. A W-band five-to-one switch MMIC with less than 3.5 dB insertion loss addresses four antenna ports and uses an integrated reference termination for pixel normalization. Both components operate in a frequency range from 75 to 100 GHz, making them suitable for broadband imaging systems with high geometrical resolution. After an overview of MMIC amplifier performance over the entire millimeter-wave frequency range, we present a chip set for imaging radar at 210 GHz, comprising linear and frequency-translating circuits.