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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Imprimir: 0040-2508
ISSN On-line: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v56.i8-9.100
12 pages

An Electrodynamic Method for Suppression of Self-Excitation in a Gyrotron Amplifier

Anatolii Fedorovich Korolev
Cd. of Sciences (Phys.-Math.), Associate Professor at the Radio Physics Chair of the Moscow State University, Russia
Valerii Anatol'evich Polezhaev
Leading Engineer at the Physics Department of the Moscow State University, Russia
Anatolii Petrovich Sukhorukov
Department of Photonics and Microwaves Structures, Faculty of Physics, Moscow State University, Vorobjevy Gory, Moscow 119899, Russia
Andrei Viktorovich Sheludchenkov
Candidate of Sciences (Phys.—Math.), Researcher at the Radio Physics Chair at the Physics Department of the Moscow State University, Russia

RESUMO

The transformation of an incident wave by random irregularities of the wall of an over-dimensional waveguide is studied with the aim to analyze a possibility to suppress efficiently self-excitation in gyrotron amplifiers. The principle of operation of a high-efficiency microwave absorber is proposed. The absorber is efficient in a broad band of frequencies and a wide range of mul-timode waveguide modes. "Cold" measurements of the device characteristics are presented and the suppression of self-excitation in the compression region of high-power gyrotron amplifiers is demonstrated.