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W-Band cascode amplifier modules for passive imaging applications

W-Band Kaskadenverstärkermodule für den Einsatz in passiven, bildgebenden Sensoren
: Tessmann, A.; Haydl, W.; Neumann, M.; Rüdiger,J.


IEEE Microwave and Guided Wave Letters 10 (2000), No.5, pp.189-191
ISSN: 1051-8207
Journal Article
Fraunhofer IAF ()
cascode; Kaskode; coplanar waveguide; Koplanarleitung; millimeter wave; Millimeterwelle; monolithic microwave integrated circuits; monolithisch integrierte Millimeterwellenschaltung; MMIC; passive imaging; passive bildgebende Sensoren

W-band amplifier modules with high gain and large bandwidth have been developed for passive imaging applications. With three cascaded waveguide modules, an average small-signal gain of 60 dB and a +-3 dB bandwidth of 15 GHz was achieved centered around 94 GHz. The assembled three-stage amplifier monolithic microwave integrated circuits are realized in coplanar technology for compact size and low cost. Cascode devices, based on a 0.15 mu m AIGaAs/InGaAs/GaAs pseudomorphic high electron mobility transistor technology, allow for individual gain control of the stages by varying the second gate voltage.