W-band MMIC direct detection receiver for passive imaging system

• Published in: 1993 IEEE MTT-S International Microwave Symposium Digest pp. 163 - 166 vol.1
• Main Authors: 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.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 1993
• Subjects: Application specific integrated circuits; Cameras; Detectors; Indium gallium arsenide; Microwave imaging; Microwave integrated circuits; Millimeter wave integrated circuits; Millimeter wave transistors; MMICs; Monolithic integrated circuits
• ISBN: 9780780312098; 0780312090
• ISSN: 0149-645X; 2576-7216
• DOI: 10.1109/MWSYM.1993.276919

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.< >