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A 210 GHz, Subharmonically-Pumped Active FET Mixer MMIC for Radar Imaging Applications

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3 Author(s)
I. Kallfass ; Fraunhofer Inst. for Appl. Solid-State Phys. (IAF), Freiburg ; H. Massler ; A. Leuther

A conversion loss of 8.5 dB is achieved for down-conversion of a 210 GHz RF signal in a sub-harmonically pumped mixer MMIC. The active FET mixer, realized in a 100 nm gate length metamorphic HEMT process, employs a dual-gate topology. The mixer achieves a 3-dB RF bandwidth from 188 to more than 210 GHz and is driven by a 10 dBm subharmonic LO signal. The combination with an integrated source follower stage results in a 2 GHz IF bandwidth. The mixer is dedicated to active imaging systems for concealed weapon detection operating in the atmospheric window around 220 GHz.

Published in:

2007 IEEE Compound Semiconductor Integrated Circuits Symposium

Date of Conference:

14-17 Oct. 2007