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GaAs Schottky Barrier Diodes for Space Based Applications at Submillimeter Wavelengths

Authors:
Thomas W. Crowe, W.C.B. Peatman, W.L. Bishop
Abstract:
Recent technological advances have made possible the development of heterodyne receivers with high sensitivity and high spectral resolution for frequencies up to 3,000 GHz (3 THz). These receivers, which rely on GaAs Schottky barrier mixer diodes to translate the high frequency signal to a lower frequency where amplification and signal processing are possible, have found a variety of important scientific applications. Recently there has been a great deal of interest in developing submillimeter wavelength receivers for space based applications involving both radio astronomy and remote sensing of the Earth's atmosphere. Such receivers must be much more compact, reliable and power efficient than those presently available. This will be achieved through the development of a new generation of planar Schottky diodes that will be driven by solid-state local oscillator sources and have parasitic capacitances as low as those of the best whisker contacted diodes. This paper reviews the status of submillimeter wavelength heterodyne receivers and the ongoing work at the University of Virginia which is focussed on the development of improved diode structures.
Categories:
Mixers, Multipliers
Year:
1990
Session:
3
Full-text:
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Page Number(s):
256-272