Open AccessAnalysis of the dispersion and interaction impedance for a coupled cavity slow wave structure with double in-line slots in TWT
Author(s) -
Fei He,
Jirun Luo,
Meifang Zhu,
Guo Wei
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.174101
Subject(s) - hfss , electrical impedance , dispersion (optics) , impedance matching , physics , equivalent circuit , code (set theory) , acoustics , dispersion relation , method of moments (probability theory) , computational physics , optics , computer science , antenna (radio) , telecommunications , mathematics , microstrip antenna , voltage , quantum mechanics , statistics , set (abstract data type) , estimator , programming language
An analytical model is presented in this paper for a coupled cavity slow-wave structure (CCSWS) with double in-line slots, also known as the “Chodorow” structure. Under matching boundary conditions in conjunction with Green’s function techniques and moment method (MOM), the formulae for discussing the high frequency characteristics of the SWS, including dispersion and interaction impedance, are given. The frequency characteristics for an X band Chodorow structure are calculated using these formulae, Ansoft HFSS code and equivalent circuit model. Results show that the dispersion and interaction impedance obtained with the formulae are in good agreement with those calculated by Ansoft HFSS code, while its calculation rate is more rapid than that with the code, and its calculation precision is higher than that with equivalent circuit method, which is helpful for the engineering design.