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Effect of cooling on the efficiency of Schottky varactor frequency multipliers at millimeter wavesThe efficiency of the Schottky diode multiplier can be increased by cooling the diode to 77 K. The main reason for better efficiency is the increased mobility of the free carriers. Because of that the series resistance decreases and a few dB higher efficiency can be expected at low input power levels. At high output frequencies and at high power levels, the current saturation decreases the efficiency of the multiplication. When the diode is cooled the maximum current of the diode increases and much more output power can be expected. There are also slight changes in the I-V characteristic and in the diode junction capacitance, but they have a negligible effect on the efficiency of the multiplier.
Document ID
19930018548
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Louhi, Jyrki (Helsinki Univ. of Technology Espoo, Finland)
Raiesanen, Antti (Helsinki Univ. of Technology Espoo, Finland)
Erickson, Neal (Five-College Astronomy Dept. Amherst, MA., United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Michigan Univ., The Third International Symposium on Space Terahertz Technology: Symposium Proceedings
Subject Category
Electronics And Electrical Engineering
Accession Number
93N27737
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19930018537Collected WorksThe Third International Symposium on Space Terahertz Technology: Symposium proceedings
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