A dual-frequency 183/380 GHz receiver for airborne applications

Details A dual-frequency 183/380 GHz receiver for airborne applications A dual-frequency 183/380 GHz receiver for airborne applications

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988itmtt..36..694b&link_type=abstract

IEEE Transactions on Microwave Theory and Techniques (ISSN 0018-9480), vol. 36, April 1988, p. 694-700.

Computer Science

2

Airborne Equipment, Cryogenic Equipment, Gallium Arsenides, Heterodyning, Microwave Radiometers, Schottky Diodes, Harmonic Generators, Microwave Oscillators, Noise Spectra, Spectroscopic Analysis, Varactor Diodes, Waveguides

Scientific paper

A complete dual-frequency cryogenic heterodyne receiver operating at 183 and 380 GHz is described. The cooled mixers are whisker-contacted GaAs Schottky diodes mounted in reduced-height fundamental-mode waveguide. The local oscillators are Gunn-oscillator-driven multipliers using GaAs varactor diodes as the harmonic generators. Quasi-optical techniques are used extensively for coupling the remote and local oscillator signals into the mixers. The overall system double side-band (DSB) noise temperature is 320 K for the 183-GHz receiver and 650 K for the 380 GHz receiver.

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