Accession Number : AD0808448

Title :   MICROWAVE CIRCUIT CONSIDERATIONS FOR BULK GAAS OSCILLATORS.

Descriptive Note : Interim rept.,

Corporate Author : MICHIGAN UNIV ANN ARBOR ELECTRON PHYSICS LAB

Personal Author(s) : Hanson, D. C.

Report Date : FEB 1967

Pagination or Media Count : 218

Abstract : The purpose of this study is to investigate the microwave circuit characteristics of bulk GaAs transferred electron oscillators. A small-signal, nonisothermal, space-charge-wave device analysis is developed and the dyadic Green's function method is used to analyze the radiation impedance of a waveguide-coaxial microwave circuit containing the GaAs oscillator. The equivalent circuit of bulk transit-time oscillators is evaluated experimentally and compared with the theoretical device impedance. Additional large-signal bulk modes of oscillation are investigated experimentally using the known circuit impedance at the frequencies of oscillation. In general, the results provide a better understanding of the various modes of oscillation which may occur in bulk GaAs transferred electron devices and are useful in determining the microwave circuit impedance characteristics and bias conditions which are needed to sustain a particular mode of oscillation. (Author)

Descriptors :   *MICROWAVE OSCILLATORS), (*GALLIUM ARSENIDES, (*SEMICONDUCTOR DEVICES, MICROWAVE OSCILLATORS), OSCILLATION, EPITAXIAL GROWTH, TRANSPORT PROPERTIES, SPACE CHARGE, ELECTRICAL IMPEDANCE, GREEN'S FUNCTION, ELECTRIC FIELDS, WAVEGUIDES, SPECIAL FUNCTIONS(MATHEMATICAL), MATHEMATICAL ANALYSIS.

Subject Categories : Inorganic Chemistry
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE