An ultra wideband helical groove waveguide TWT

Author

Wei, Yanyu ; Wang, Wenxiang ; Jia, Baoh ; Sinha, A.K. ; Liu, Sheng-Gang ; Park, Gun-Sik

Author_Institution

Sch. of Phys., Seoul Nat. Univ., South Korea

fYear

2002

fDate

17-19 Aug. 2002

Firstpage

82

Lastpage

85

Abstract

A coaxial helical groove waveguide with step-shaped groove profile, loaded by the annular electron beam guided by a strong magnetic field, has been proposed to produce ultra-wideband coherent radiation of higher frequency electromagnetic waves. The structure has been analyzed for hot dispersion and small signal gain. It is found that compared with other available coaxial helical groove structures, the present structure has dispersion free regimes for an ultra wideband frequency range; therefore the operation bandwidth can be remarkably extended.

Keywords

UHF tubes; electron beams; helical waveguides; travelling wave tubes; annular electron beam; coaxial helical groove waveguide; dispersion free regimes; helical groove waveguide TWT; hot dispersion; magnetic field; operation bandwidth; small signal gain; step-shaped groove profile; ultra-wideband TWT; ultra-wideband coherent radiation; Coaxial components; Electromagnetic radiation; Electromagnetic scattering; Electromagnetic waveguides; Electron beams; Frequency; Magnetic analysis; Magnetic fields; Signal analysis; Ultra wideband technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology, 2002. Proceedings. ICMMT 2002. 2002 3rd International Conference on

Print_ISBN

0-7803-7486-X

Type

conf

DOI

10.1109/ICMMT.2002.1187640

Filename

1187640