Frequency agile quasi-optical mode converter for gyrotrons

P. R. Winning

doi:10.1117/12.2301493

1 December 1990 Frequency agile quasi-optical mode converter for gyrotrons

P. R. Winning

Proceedings Volume 1514, 15th International Conference on Infrared and Millimeter Waves; 15142B (1990) https://doi.org/10.1117/12.2301493
Event: 15th International Conference on Infrared and Millimeter Waves, 1990, Orlando, FL, United States

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 TE_mn cylindrical ouput modes of the maser into a highly directional pencil beam at several operating frequencies.

Citation Download Citation

P. R. Winning "Frequency agile quasi-optical mode converter for gyrotrons", Proc. SPIE 1514, 15th International Conference on Infrared and Millimeter Waves, 15142B (1 December 1990); https://doi.org/10.1117/12.2301493

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