Design and analysis of a broadband quasi-optical mode converter with a Denisov launcher
Received:December 16, 2019  Revised:August 27, 2020  download
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Author NameAffiliationE-mail
BIAN Hui-Qi Beijing Institution of Radio Measurement, Beijing 100854, China
School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China 
bianhuiqi@pku.edu.cn 
DU Chao-Hai School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China duchaohai@pku.edu.cn 
PAN Shi School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China  
LIU Pu-Kun School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
Beijing Institution of Radio Measurement, Beijing 100854, China 
 
Abstract:A terahertz quasi-optical mode converter with wide bandwidth was studied and designed. The quasi-optical mode converter used Denisov launcher, which had high efficiency, and worked in TE6,2 mode. It was used to realize mode conversion in gyrotron. As the parameters of Denisov launcher were the main factors affecting the broadband performance of quasi-optical mode converter, the optimal design of the radiator parameters could increase the bandwidth of the mode converter. Using the self-developed quasi-optical simulation program for simulation, the bandwidth of the mode converter can reach 2 GHz (center frequency 94 GHz).
keywords:terahertz  quasi-optics  mode converting  broadband
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