Simulation of lossy interaction structure for Ka-band Gyro-TWT

Author

Alaria, M.K. ; Choyal, Y. ; Sinha, Arun Kumar

Author_Institution

Microwave Tubes Area, Central Electron. Eng. Res. Inst. (CEERI), Pilani, India

fYear

2013

fDate

21-23 May 2013

Firstpage

1

Lastpage

2

Abstract

The analysis of the lossy interaction structure for Ka-band Gyro-TWT has been carried out and discussed. In this paper, dispersion and interaction impedance characteristics of the interaction structure have been determined using 3-D simulator CST-MWS. The beam-wave interaction analysis has been carried out using particle-in-cell (PIC) code MAGIC. The simulated result shows that the interaction structure can produce more than 30 kW output power, 40 dB saturated gain, and 3dB bandwidth for Ka-band. The method of broad banding a gyro-TWT at relatively large gain by lossy loading the circular waveguide by axially periodic loaded dielectric have been presented in this paper.

Keywords

circular waveguides; dielectric-loaded waveguides; dispersion (wave); electric impedance; gyrotrons; microwave tubes; millimetre wave tubes; travelling wave tubes; 3D simulator CST-MWS; Ka-band Gyro-TWT; PIC code MAGIC; axially periodic loaded dielectric; beam-wave interaction analysis; broadbanding; circular waveguide; dispersion; interaction impedance characteristics; lossy interaction structure; particle-in-cell; Bandwidth; Dielectric losses; Dispersion; Gain; Loaded waveguides; Periodic structures; Dispersion; Gyro traveling wave tube; Interaction impedance; beam wave interaction;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2013 IEEE 14th International

Conference_Location

Paris

Print_ISBN

978-1-4673-5976-4

Type

conf

DOI

10.1109/IVEC.2013.6570995

Filename

6570995