Accession Number : AD0284788

Title :   INVESTIGATION OF NOISE GENERATION IN ELECTRICALLY TUNABLE MICROWAVE OSCILLATORS

Corporate Author : CORNELL UNIV ITHACA N Y

Personal Author(s) : DALMAN,G.C. ; MCISAAC,P.R. ; MACKENZIE,L.A.

Report Date : 15 JUN 1962

Pagination or Media Count : 1

Abstract : The self- and cross-spectra of the frequency modulation and beam current noise of two VA 161's and a QK 610 were measured. In both cases there are distinct indications of noise mechanisms peculiar to low frequencies present. The noise transformation properties of active beam transducers are compared with passive transducers for application in linear-beam microwave tubes. A nonlinear theory of traveling-wave tubes that includes both space and time harmonics is presented. A new series of noise measurements were made in a linear electron beam of moderate power. Since the particular gun used for this experiment is a shielded Pierce-type gun, emphasis is on the noise behavior of the beam near Brillouin flow conditions. (Author)

Descriptors :   *BACKWARD WAVE OSCILLATORS, *MICROWAVE OSCILLATORS, *NOISE (RADAR), *NOISE (RADIO), *TRAVELING WAVE TUBES, DIFFERENTIAL EQUATIONS, ELECTRON BEAMS, EQUATIONS, FREQUENCY MODULATION, INTERMEDIATE FREQUENCY AMPLIFIERS, MATRICES(MATHEMATICS), MEASUREMENT, MICROWAVE EQUIPMENT, PARTIAL DIFFERENTIAL EQUATIONS, REDUCTION, REFLEX KLYSTRONS, SIGNAL-TO-NOISE RATIC, TEST EQUIPMENT, TESTS, THEORY, TRANSDUCERS, TUNING DEVICES

Distribution Statement : APPROVED FOR PUBLIC RELEASE