Study of Traveling Wave Tube With Folded-Waveguide Circuit Shielded by Photonic Crystals

Author

Gong, Yubin ; Yin, Hairong ; Wei, Yanyu ; Yue, Lingna ; Deng, Mingjin ; Lu, Zhigang ; Xu, Xiong ; Wang, Wenxiang ; Liu, Pukun ; Liao, Fujiang

Author_Institution

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

Volume

57

Issue

5

fYear

2010

fDate

5/1/2010 12:00:00 AM

Firstpage

1137

Lastpage

1145

Abstract

The design and simulated performance of a traveling-wave tube (TWT) constructed by combining a folded-waveguide (FW) slow-wave circuit with arrays of 2-D photonic crystals (PhC) are presented. Numerical results reveal that the Pierce interaction impedance of the FW circuit with PhCs is similar to the circuit without PhC arrays. The gain, output power, and efficiency of TWTs with and without PhCs are also similar when the circuit dimensions are identical; however, the TWT with PhCs can filter out nonoperating modes, which may improve the stability of the circuit shielded with PhCs when compared to the same circuit shielded by metal walls.

Keywords

photonic crystals; slow wave structures; 2D photonic crystals; TWT; folded-waveguide circuit; metal walls; pierce interaction impedance; slow-wave circuit; traveling wave tube; Circuit simulation; Circuit stability; Electromagnetic scattering; Electromagnetic waveguides; Filters; Frequency; Impedance; Passband; Photonic crystals; Power generation; Folded waveguide (FW); photonic crystals (PhC); slow-wave structure (SWS); travelling-wave tube (TWT);

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2010.2043176

Filename

5427143