Title :
A 210 GHz, Subharmonically-Pumped Active FET Mixer MMIC for Radar Imaging Applications
Author :
Kallfass, I. ; Massler, H. ; Leuther, A.
Author_Institution :
Fraunhofer Inst. for Appl. Solid-State Phys. (IAF), Freiburg
Abstract :
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.
Keywords :
field effect MMIC; field effect transistors; millimetre wave mixers; active imaging systems; conversion loss; frequency 210 GHz; radar imaging; subharmonically-pumped active FET mixer MMIC; FETs; MMICs; Millimeter wave radar; Millimeter wave technology; Millimeter wave transistors; Mixers; Power generation; RF signals; Radar imaging; Radio frequency;
Conference_Titel :
Compound Semiconductor Integrated Circuit Symposium, 2007. CSIC 2007. IEEE
Conference_Location :
Portland, OR
Print_ISBN :
978-1-4244-1022-4
DOI :
10.1109/CSICS07.2007.18
