Title :
Cryogenic All Sold-State Millimeter-Wave Receivers for Airborne Radiometry
Author :
Vowinkel, B. ; Gruner, K. ; Suss, H. ; Reinert, W.
fDate :
May 31 1983-June 3 1983
Abstract :
Cryogenic receiver modules for 90 and 140 GHz have been developed that are part of an airborne imaging system. They consist of Schottky-barrier mixers followed by GaAs-FET IF amplifiers. The DSB receiver noise temperatures are 210 K for the 90 GHz and 250 K for the 140 GHz system. The instantaneous bandwidth is 2.5 GHz for both front-ends. Results of some flight tests are presented.
Keywords :
Band pass filters; Bandwidth; Cryogenics; Detectors; Frequency response; High-resolution imaging; Image resolution; Microwave radiometry; Schottky diodes; Temperature;
Conference_Titel :
Microwave Symposium Digest, 1983 IEEE MTT-S International
Conference_Location :
Boston, MA, USA
DOI :
10.1109/MWSYM.1983.1130985
