Sine Waveguide for 0.22-THz Traveling-Wave Tube

Author

Xu, Xiong ; Wei, Yanyu ; Shen, Fei ; Duan, Zhaoyun ; Gong, Yubin ; Yin, Hairong ; Wang, Wenxiang

Author_Institution

Vacuum Electron. Nat. Lab., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

32

Issue

8

fYear

2011

Firstpage

1152

Lastpage

1154

Abstract

A novel slow-wave structure called sine waveguide has been proposed to develop a wideband high-power terahertz radiation source. The sine waveguide evolves from a rectangular waveguide oscillating with sinusoid along its longitudinal direction. This letter reports the electromagnetic characteristics of the sine waveguide and its effective surface plasmon amplification mechanism. From our calculation, this circuit structure possesses low ohmic losses and reflection and can be applied to produce terahertz waves ranging from 0.2 to 0.25 THz with several hundreds of watts. Moreover, the maximum gain and interaction efficiency may reach 37.7 dB and 9.6%, respectively.

Keywords

millimetre wave devices; rectangular waveguides; slow wave structures; surface plasmons; efficiency 9.6 percent; electromagnetic characteristics; frequency 0.2 THz to 0.25 THz; gain 37.7 dB; high-power terahertz radiation source; rectangular waveguide; sine waveguide; slow-wave structure; surface plasmon amplification mechanism; traveling-wave tube; Electron beams; Electron tubes; Integrated circuit modeling; Plasmons; Rectangular waveguides; Surface waves; Sheet electron beam; sine waveguide; terahertz; traveling-wave tube (TWT);

fLanguage

English

Journal_Title

Electron Device Letters, IEEE

Publisher

ieee

ISSN

0741-3106

Type

jour

DOI

10.1109/LED.2011.2158060

Filename

5910356