Title :
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
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;
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
DOI :
10.1109/SOPO.2010.5504321
