High power wideband terahertz traveling wave tube based on folded double ridge groove waveguide
Received:May 07, 2018  Revised:September 27, 2018  download
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Author NameAffiliationE-mail
TIAN Yan-Yan University of Electronic Science and Technology of China tyy5586561@163.com 
YUE Ling-Na University of Electronic Science and Technology of China  
WANG He-Xin University of Electronic Science and Technology of China  
ZHOU Qing University of Electronic Science and Technology of China  
WEI Yan-Yu University of Electronic Science and Technology of China  
HAO Bao-Liang Beijing Vacuum Electronics Research Institute  
WEI Yi-Xue Beijing Vacuum Electronics Research Institute  
GONG Yu-Bin University of Electronic Science and Technology of China ybgong@uestc.edu.cn 
Abstract:A modified folded groove waveguide called folded double ridge groove waveguide (FDRGW) is put forward for developing broadband high-power terahertz (THz) travelling-wave tube (TWT) .A newtransmission waveguide which is appropriate for this newkind of SWS as input and output energy coupler is proposed.It can be found from the high frequency characteristic simulation results that the folded double ridge waveguide SWS can increase the average interaction impedance and extend its operating bandwidth.In addition, the particle-in-cell (PIC) simulation results reveal that with the beam voltage of 27.4 kV and the beam current of 0.25 A, the average output power of the newfolded double ridge groove waveguide TWT can reach 65.8 W and the corresponding gain is 27.21 dB at the center frequency 340 GHz.Therefore, the folded double ridge groove waveguide TWT could be used as wide-band and high-power terahertz radiation source.
keywords:Terahertz Traveling Wave Tube, Folded double ridge groove waveguide, High power, wideband
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Copyright:《Journal of Infrared And Millimeter Waves》