A reflected power isolator for a 10 kW, 28 GHz gyrotron

Author

Woskov, P.P.

Author_Institution

Plasma Sci. & Fusion Center, MIT, Cambridge, MA, USA

fYear

2013

fDate

2-7 June 2013

Firstpage

1

Lastpage

3

Abstract

An efficient reflected power isolator has been built for a 10 kW, 28 GHz gyrotron for operation with a circularly polarized beam. It makes use of a one-dimensional copper grill linear polarizer in a 4-port waveguide cross and a grooved mirror in a miter bend for transformations between linear and circular polarizations. The polarizers are implemented in 76 mm diameter corrugated aluminum waveguide with water loads for power rejection. Backward power isolation of 25 dB and an insertion loss of ~0.3 dB have been determined.

Keywords

gyrotrons; microwave isolators; polarisation; 1D copper grill linear polarizer; 4-port waveguide cross; backward power isolation; circular polarizations; circularly polarized beam; corrugated aluminum waveguide; frequency 28 GHz; grooved mirror; gyrotron; insertion loss; linear polarizations; miter bend; polarizers; power 10 kW; power rejection; reflected power isolator; transformations; water loads; Copper; Gyrotrons; Isolators; Millimeter wave technology; Mirrors; Optical waveguides; Wires; gyrotron; millimeter-wave technology; mode converters; polarizer; reflected power isolator; waveguides;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International

Conference_Location

Seattle, WA

ISSN

0149-645X

Print_ISBN

978-1-4673-6177-4

Type

conf

DOI

10.1109/MWSYM.2013.6697428

Filename

6697428