%0 Journal Article
%T Study of high frequency characteristics of the rectangular waveguide grating slow-wave structure with arbitrary grooves<br>具有任意槽的矩形波导栅慢波结构高频特性的研究
%A Lu Zhi-Gang
%A Wei Yan-Yu
%A Gong Yu-Bin
%A Wu Zhou-Miao
%A Wang Wen-Xiang
%A <br>路志刚
%A 魏彦玉
%A 宫玉彬
%A 吴周淼
%A 王文祥
%J 物理学报
%D 2007
%I 
%X The rectangular waveguide grating slow-wave structure (SWS) is a new type of RF system of millimeter traveling wave tube (TWT). However, it has narrow pass band. For the purpose of broadening the bandwidth of this circuit, it is necessary to study the influence of groove shapes on the characteristics. In this paper, the dispersion equation of a rectangular waveguide grating SWS with arbitrary grooves is derived by means of an approximate field-theory analysis, in which the continuous profile of the groove is approximately replaced by a series of steps, and the field continuity at the interface of two neighboring steps and the matching conditions at the interface between the groove region and the interaction region are ensured. The cold test on dispersion characteristics of a rectangular groove SWS shows that the theoretical results are in good agreement with the experimental results. We have calculated the dispersion characteristics and the coupling impedance of the slow-wave structures with some special groove shapes. It shows that the dispersion characteristics of the triangle-groove structure is the weakest and the coupling impedance of it is the lowest, while the dispersion characteristics of the inverted-trapezoid-groove structure is the strongest and the coupling impedance of it is the highest.
%K rectangular waveguide grating
%K arbitrary groove
%K dispersion characteristics
%K slow wave structure<br>矩形波导栅
%K 任意槽
%K 色散特性
%K 慢波结构
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=94BDFD058A1DF90D&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=B31275AF3241DB2D&sid=AA2665DA71CEEF99&eid=F39F4022D2BD9EAF&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=9