Simulation study on dispersion shaping and harmonic suppression in traveling-wave tubes

Author

Zhu, Zhaojun ; Jia, Baofu ; Wei, Chaolei

Author_Institution

Inst. of Appl. Phys., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2012

fDate

19-20 April 2012

Firstpage

1

Lastpage

4

Abstract

This paper describes the investigation of broadband interaction and harmonic suppression. A special dispersion shape used in broadband traveling-wave tubes (TWT) is obtained. The and simulation studies of negative dispersion are presented. On the basis of these studies, a broadband TWT used in microwave power module (MPM) is designed. Compared with the old TWT with flat dispersion, the new one with negative dispersion decreases the second harmonic content about 10 dB and improves the fundamental efficiency about 5% at the low end of the band. The modified TWT is fabricated and the simulation results meet the measurements very well.

Keywords

harmonics suppression; travelling wave tubes; MPM; TWT; broadband interaction; broadband traveling-wave tubes; dispersion shaping; harmonic suppression; microwave power module; Broadband communication; Dispersion; Electron tubes; Harmonic analysis; Harmonics suppression; Impedance; Power generation; Broadband interaction; MPM; TWT; harmonic suppression; negative dispersion;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Circuits and System Technology (MMWCST), 2012 International Workshop on

Conference_Location

Chengdu

Print_ISBN

978-1-4673-1893-8

Type

conf

DOI

10.1109/MMWCST.2012.6238143

Filename

6238143