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...