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A 220 GHz (G-band) microstrip MMIC single-ended resistive mixer

Ein 220 GHz (G-Band) unsymetrischer resistiver Mischer MMIC in Mikrostreifen-Technik
: Gunnarsson, S.E.; Wadefalk, N.; Angelov, I.; Zirath, H.; Kallfass, I.; Leuther, A.


IEEE microwave and wireless components letters 18 (2008), Nr.3, S.215-218
ISSN: 1051-8207
ISSN: 1531-1309
Fraunhofer IAF ()
GaAs; G-Band; imaging; Bildgebungsverfahren; MHEMT; microstrip; Mikrostreifenleitung; millimeter wave; Millimeterwelle; microwave integrated circuits; integrierte Mikrowellenschaltung; MMIC

This letter presents the design and characterization of a 220 GHz microstrip monolithic microwave integrated circuit single-ended resistive mixer in a 0.1 µm GaAs mHEMT technology. A conversion loss as low as 8.7 dB is obtained, limited by the available local oscillator (LO) power (1.5 dBm) in the measurement setup. The radio frequency (RF) bandwidth is also limited by the measurement setup, but the mixer demonstrates a flat response over the measured 200 to 220 GHz frequency range. Furthermore, measured intermediate frequency bandwidth, 1-dB input compression point, LO-to-RF isolation, and reflection coefficients are presented and discussed.