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Proceedings Paper

Frequency agile quasi-optical mode converter for gyrotrons
Author(s): P. R. Winning
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Paper Abstract

A series of electron cyclotron masers (ECMs) have been successfully designed and operated over the past 10 years at Strathclyde University culminating in the highly tunable 35 to 200 GHz Mk 6 maser. High power masers require for certain applications a plane polarized pencil beam. In order to utilize the broad-band tunability of the maser, it is necessary to use a mode conversion process which is independent of frequency. The single mode serpentine and ripple-wall waveguide converters are therefore not applicable in this case. A quasi-optical mode converter of the Vlasov (step-cut radiator) type was constructed and used to successfully convert different TEmn cylindrical ouput modes of the maser into a highly directional pencil beam at several operating frequencies.

Paper Details

Date Published: 1 December 1990
PDF: 3 pages
Proc. SPIE 1514, 15th International Conference on Infrared and Millimeter Waves, 15142B (1 December 1990); doi: 10.1117/12.2301493
Show Author Affiliations
P. R. Winning, Univ. of Strathclyde (United Kingdom)

Published in SPIE Proceedings Vol. 1514:
15th International Conference on Infrared and Millimeter Waves
Richard J. Temkin, Editor(s)

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