Accession Number : AD0474676

Title :   NITROGEN-COOLED LOW-NOISE PARAMETRIC AMPLIFIER USING INDIUM ANTIMONIDE VARACTORS.

Descriptive Note : Final rept. 1 Mar 64-31 Aug 65,

Corporate Author : AIRBORNE INSTRUMENTS LAB DEER PARK NY

Personal Author(s) : Lombardo, Peter P.

Report Date : NOV 1965

Pagination or Media Count : 56

Abstract : This report describes the research activity on InSb varactors and the development of a cryogenically cooled, low noise, broadband parametric amplifier at X-band. Detailed measurements and evaluation of InSb and GaAs varactors have been made to determine their relative merits. Due to an anomalous current effect observed in InSb varactors, the final amplifier was delivered with a GaAs varactor. The amplifier had a noise temperature of 70 K, at 500 Mc bandwidth, and a mean gain of 16 db, when cooled to 77 K. (Author)

Descriptors :   (*PARAMETRIC AMPLIFIERS, SCIENTIFIC RESEARCH), (*VARACTOR DIODES, SCIENTIFIC RESEARCH), CRYOGENICS, NITROGEN, X BAND, BANDWIDTH, NOISE(RADIO), GALLIUM ALLOYS, ARSENIC ALLOYS, INDIUM ALLOYS, ANTIMONY ALLOYS, GAIN.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE