Accession Number : AD0640204

Title :   STUDY OF PRE-OSCILLATORY BEHAVIOR OF CROSSED-FIELD MICROWAVE TUBES.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : Richmond,Park

Report Date : AUG 1966

Pagination or Media Count : 59

Abstract : The report discusses a series of experiments to study the noise behavior of planar crossed-field beams. The study was divided into two phases. The first phase included the design of the electron optics system and the construction of several versions of a beam tester to evaluate the design. In the second phase, a design for an experimental noise tube was evolved using the electron optics system developed in the first phase. A tube was also constructed and a series of noise measurements was made during this phase. The noise was measured as a function of longitudinal position along the beam using an X-band cavity for several values of beam position and over a 2-to-1 current range. Noise variations were observed along the length of the beam, but the spacing between noise peaks was not related to the operating parameters in any simple manner. No noticeable growth of noise along the beam was observed; however, an increase in the noise level was noted as the cathode emission became totally space-charge-limited. (Author)

Descriptors :   (*CROSSED FIELD DEVICES, MICROWAVE EQUIPMENT), ELECTRON OPTICS, NOISE(RADIO), ELECTRON BEAMS, TEST EQUIPMENT

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE