Accession Number : AD0635507

Title :   ELECTROSTATICALLY FOCUSED BACKWARD-WAVE OSCILLATOR DEVELOPMENT.

Corporate Author : HARRY DIAMOND LABS WASHINGTON D C

Personal Author(s) : UDELSON, Burton J.

Report Date : APR 1966

Pagination or Media Count : 66

Abstract : A program was undertaken at HDL with the objective of developing a backward-wave oscillator (BWO) that would have the properties required for fuzing application (e.g., compact size, light weight, rugged structure, etc.). The BWO was designed to operate at C-band, and utilized two parallel ladder lines that acted both as an rf slow-wave structure and also as the electrostatic-focusing structure for an electron sheet beam. With the knowledge of the basic ruggedness of the ladder-line structure, and of the feasibility of constructing small, lightweight tubes, the BWO program was aimed primarily at achieving satisfactory electrical performance. RF power outputs of the order of 50 mW were obtained, even though misalignments of the ladder-line structure reduced the beam transmission to the collector. Much higher power outputs are visualized for tubes of this design in which satisfactory alignment is achieved. The BWO development program was terminated because of a shift of emphasis in the requirements of HDL systems. The details of fabrication are given for both mechanical designs that were employed during the course of the program, one utilizing a Kovar-glass envelope, and the other consisting of ceramic-metal construction throughout. Some suggestions are also offered as to the direction of future developmental work. (Author)

Descriptors :   (*BACKWARD WAVE OSCILLATORS, FOCUSING), (*ELECTRON BEAMS, BACKWARD WAVE OSCILLATORS), ELECTROSTATICS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE