Grating rectangular waveguide for THz backward wave oscillator
Received:May 02, 2017  Revised:September 15, 2017  download
Citation:
Hits: 552
Download times: 635
Author NameAffiliationE-mail
ZHANG Kai-Chun THz Center, School of Physical Electronics, University of Electronic Science and Technology of China zh.kch@163.com 
CHEN Ke a THz center,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu  
WANG Qi a THz center,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu  
SHENG Chang-Jian a THz center,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu  
YUAN Xue-Song THz CenterSchool of Physical ElectronicsUniversity of Electronic Science and Technology of China  
Abstract:A slow-wave structure (SWS) composed of a grating inside a rectangular waveguide is adopted as the circuit of the backward wave oscillator (BWO) in terahertz regime in this paper. Its dispersion curves and interaction impedance are presented by an analytical method and three-dimensional (3-D) electromagnetic software. The results by analysis and simulation agree well. By optimization, a BWO with the SWS at a central frequency 340GHz is fully verified by 3-D particle-in-cell (PIC) code. The BWO is demonstrated more than 100mW output power with very low current density and 30GHz tuning bandwidth.
keywords:Backward wave oscillator (BWO)  rectangular waveguide grating  slow-wave structure (SWS)  terahertz
View Full Text  View/Add Comment  Download reader

Copyright:《Journal of Infrared And Millimeter Waves》