Moment method analysis of a feeding system slotted-waveguide antenna

Abstract
The electromagnetic boundary value problem of finite thickness orthogonal waveguides coupled by inclined slots is studied using a moment method and dyadic Green's function theories. The coupling properties between two inclined slots are analysed and a model of equivalence circuits is put forward. Theoretical results are presented for scattering and impedance parameters of slots. In general, these are in good agreement with the experimental measurement.