Title :
W-band MMIC direct detection receiver for passive imaging system
Author :
Dow, G.S. ; Ton, T.N. ; Wang, H. ; Lo, D.C.W. ; Lam, W. ; Allen, B. ; Tan, K. ; Berenz, J. ; Yujiri, L. ; Mussetto, M. ; Lee, P.
Author_Institution :
TRW, Redondo Beach, CA, USA
Abstract :
W-band MMIC (monolithic microwave integrated circuit) direct-detection receivers for passive millimeter-wave imaging applications have been demonstrated. These receivers were developed using InGaAs HEMT (high electron mobility transistor)-based W-based LNA (low-noise amplifier) and preamplified detector MMICs. The first receiver uses a 50-dB-gain, 6-dB-noise-figure amplifier and a Schottky-barrier-diode waveguide detector. The amplifier uses four W-band MMIC LNAs. The second receiver consists of two three-stage MMIC LNAs and an MMIC preamplified detector chip. Individual receivers were integrated with a millimeter-wave camera system. Field imaging acquisition runs were performed using the camera in stepping pushbroom image acquisition mode, and excellent results were obtained.<>
Keywords :
MMIC; field effect integrated circuits; high electron mobility transistors; microwave amplifiers; microwave imaging; 50 dB; 6 dB; HEMT; InGaAs; LNA; Schottky-barrier-diode waveguide detector; W-band MMIC direct detection receiver; field imaging acquisition; millimeter-wave camera system; passive imaging system; preamplified detector; stepping pushbroom image acquisition mode; Application specific integrated circuits; Cameras; Detectors; Indium gallium arsenide; MMICs; Microwave imaging; Microwave integrated circuits; Millimeter wave integrated circuits; Millimeter wave transistors; Monolithic integrated circuits;
Conference_Titel :
Microwave Symposium Digest, 1993., IEEE MTT-S International
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-7803-1209-0
DOI :
10.1109/MWSYM.1993.276919
