%0 Journal Article
%T Investigation of Circular Comb Slow-Wave Structure of THz Backward-Wave Oscillators<br>THz返波管圆波导梳状慢波结构的研究
%A Wang Zi-cheng
%A Lu De-jian
%A Wang Li
%A Li Hai-qiang
%A Zhang Shi-jie
%A Xu An-yu
%A Hao Bao-liang
%A Song Pei-de
%A Dai Zhi-hao
%A <br>王自成
%A 陆德坚
%A 王莉
%A 李海强
%A 张世杰
%A 徐安玉
%A 郝保良
%A 宋培德
%A 戴志浩
%J 电子与信息学报
%D 2008
%I 
%X 3-D electromagnetic simulation software is used to calculate the dispersion and interaction impedance of circular comb Slow-Wave Structure (SWS) which works for Terahertz (THz) Backward-wave Oscillators (BWO). The results show that the inner radius of SWS is 0.175mm in the band of 430-570GHz, and the inner radius of SWS is 0.1mm in the band of 760-940GHz. The large radius of SWS is a great help for improving beam transmission. The interaction impedance of fundamental backward wave of the SWS is smaller than 1 is a good explain to the truth that the electronic efficiency of THz BWO is smaller than 0.01%.
%K Backward-Wave Oscillations (BWO)
%K Terahertz
%K Slow-Wave Structure (SWS)
%K Dispersion
%K Interaction impedance<br>返波管
%K 太赫兹
%K 圆波导梳状慢波结构
%K 色散
%K 耦合阻抗
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=687032447237AD66B6C85CFBCA35F28C&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=708DD6B15D2464E8&sid=558ECF0AA61051C6&eid=2E5149EC64D500A9&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=13