Accession Number : AD0783436

Title :   Noise in Microwave Semiconductor Oscillators and Amplifiers. Part I. Noise Properties of Transferred-Electron Devices.

Descriptive Note : Final rept. 1 Jul 71-20 Dec 73,

Corporate Author : MICHIGAN UNIV ANN ARBOR ELECTRON PHYSICS LAB

Personal Author(s) : Patterson,Joseph T. ; Lomax,Ronald J. ; Haddad,George I.

Report Date : JUN 1974

Pagination or Media Count : 203

Abstract : A general noise theory has been developed for a nonlinear, self-oscillating device in a parallel G-L-C circuit. Variation of the nonlinear device admittance with both RF voltage and bias voltage is incorporated in the theory and the sources of noise are lumped into two equivalent noise generators: a video noise voltage generator and an RF noise current generator. The present study extends the work of Sweet by including the RF voltage dependence in the theory and by applying the theory to a quenched-mode admittance model of transferred-electron (TE) devices. The noise theory is used to study AM and FM TE oscillator noise as functions of load conductance, bias voltage, cavity tuning and carrier doping density for uniformly doped TE devices. (Modified author abstract)

Descriptors :   *Microwave oscillators, Noise(Electrical and electromagnetic), Gunn diodes, Cavity resonators, Noise(Radio), Electrons, Transfer, Electronic equipment

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE