Design of waveguide-to-orotron-resonator transition with modified Bethe theory

Author

Faby, G. ; Schünemann, K.

Author_Institution

Tech. Univ. Hamburg-Harburg, Germany

Volume

45

Issue

11

fYear

1997

fDate

11/1/1997 12:00:00 AM

Firstpage

2043

Lastpage

2048

Abstract

The modified Bethe theory is applied to the waveguide-to-resonator transition, which is used for output coupling in an orotron oscillator designed for operation at 94 GHz. The finite thickness of the coupling hole between output waveguide and resonator is taken into account. The approach results in an equivalent circuit, which describes the reflection-type resonator, with respect to the output waveguide. Its equivalent circuit parameters are given in closed-form expressions. The calculated reflection coefficients are compared to experimental results. The assumed single-mode operation in the resonator is demonstrated by field-profile measurements

Keywords

Q-factor; cavity resonators; electromagnetic fields; equivalent circuits; millimetre wave tubes; slow wave structures; waveguide theory; 94 GHz; EHF; MM-wave tubes; circuit parameters; closed-form expressions; equivalent circuit; field-profile measurements; modified Bethe theory; orotron oscillator; output coupling; output waveguide; reflection coefficients; reflection-type resonator; single-mode operation; transition design; waveguide-to-orotron-resonator transition; Apertures; Coupling circuits; Dielectric measurements; Electromagnetic waveguides; Equivalent circuits; Optical resonators; Optical waveguides; Oscillators; Waveguide theory; Waveguide transitions;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.644232

Filename

644232