Accession Number : AD0635084

Title :   PERFORMANCE OF P-N JUNCTION GALLIUM ARSENIDE AVALANCHE (TRANSIT-TIME) OSCILLATORS.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : Higgins, Vincent J. ; Brand,Frank A. ; Baranowski,Joseph J.

Report Date : APR 1966

Pagination or Media Count : 25

Abstract : The report presents preliminary results on the generation of microwave energy from epitaxial gallium arsenide varactor diodes biased into avalanche. These diodes were originally designed to be used in a low-noise parametric amplifier or high-efficiency harmonic generators. An experimental measurement technique using a signal substitution method is fully described. The measurement technique allows one to fully isolate and examine characteristics of the frequency of oscillation without use of filters and to examine any frequency of oscillation between 6.0 and 50 GHz. Details of experimental results on both CW abd pulsed oscillators are given. Pulsed oscillations were observed between 7.89 and 31.2 GHz with specific data tabulated. CW oscillation output of over 20 mW in K sub u band, 13.4 GHz with efficiencies of 4/5 per cent was observed. Specific data such as CW output variation with bias current, efficiency variation with bias current, etc., are presented. In addition, parametrically related oscillation and diode tunability are discussed. (Author)

Descriptors :   (*MICROWAVE OSCILLATORS, *AVALANCHE DIODES), GALLIUM ALLOYS, ARSENIC ALLOYS, K BAND, X BAND, PULSE GENERATORS, PERFORMANCE(ENGINEERING)

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE