A gyrotron-traveling-wave amplifier based on lossy dielectric-coated metal cylindrical waveguide

Author

Du, Chao-Hai ; Xue, Qian-zhong ; Liu, Pu-Kun ; Wang, Ming-Hong

Author_Institution

Key Lab. of High Power Microwave Sources & Technol., Chinese Acad. of Sci., Beijing, China

fYear

2009

fDate

28-30 April 2009

Firstpage

221

Lastpage

222

Abstract

Simulation of a gyrotron-traveling-wave amplifier (gyro-TWT) based on periodic lossy dielectric-coated metal cylindrical waveguide is presented. The lossy property of the periodically loaded dielectric relieves the worries of the potential Bragg resonance arising from the periodicity of the interaction circuit, brings high attenuation to the potential competing mode, and enhances the stability of a gyro-TWT. A simplified designing process of a Ka-band gyro-TWT based on the lossy dielectric-coated waveguide is presented in this paper.

Keywords

circular waveguides; dielectric waveguides; gyrotrons; travelling wave amplifiers; Bragg resonance; Ka-band gyro-TWT; dielectric coated waveguide; gyrotron-traveling-wave amplifier; lossy property; metal cylindrical waveguide; Attenuation; Circuits; Dielectric losses; Electromagnetic waveguides; High power amplifiers; Laboratories; Microwave amplifiers; Process design; Resonance; Tellurium; absolute instability; gyro-TWT; lossy dielectric;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference, 2009. IVEC '09. IEEE International

Conference_Location

Rome

Print_ISBN

978-1-4244-3500-5

Electronic_ISBN

978-1-4244-3501-2

Type

conf

DOI

10.1109/IVELEC.2009.5193493

Filename

5193493