Analysis of a 140GHz Two-Section Folded Waveguide Traveling-Wave Tube

Author

He, J. ; Wei, Y.Y. ; Gong, Y.B. ; Wang, W.X. ; Guo, G. ; Liao, M.L. ; Park, G.S.

Author_Institution

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

fYear

2010

fDate

19-21 June 2010

Firstpage

1

Lastpage

4

Abstract

An analysis of a two-section folded waveguide TWT for terahertz radiation is performed. The theory of high frequency characteristics including the dispersion properties and the beam-wave interaction impedance of this structure are analyzed for nonlinear interaction analysis. A THz-band folded waveguide TWT using 10.8kV, 50mA electron beam is designed and the nonlinear beam-wave interaction in the TWT is investigated by the use of MAGIC3D. The maximum radiation power of 34.7W corresponding to the saturated gain of 25.4dB is predicated at 140GHz.

Keywords

terahertz wave devices; travelling wave tubes; waveguides; MAGIC3D; THz-band folded waveguide TWT; beam-wave interaction impedance; current 50 mA; dispersion property; electron beam; folded waveguide traveling-wave tube; frequency 140 GHz; gain 25.4 dB; high frequency characteristic; nonlinear beam-wave interaction; nonlinear interaction analysis; power 34.7 W; terahertz radiation; voltage 10.8 kV; Biomedical imaging; Circuits; Cutoff frequency; Electron beams; Impedance; Performance analysis; Rectangular waveguides; Space technology; Vacuum technology; Waveguide transitions;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics and Optoelectronic (SOPO), 2010 Symposium on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-4963-7

Electronic_ISBN

978-1-4244-4964-4

Type

conf

DOI

10.1109/SOPO.2010.5504321

Filename

5504321