Mutual Coupling Between Parallel Plate Waveguides

Abstract
Coupling between parallel plate waveguides is investigated using the Wiener-Hopf technique. For a TE/sub o,l/ excitation of one guide, exact solutions for the radiate reflected and transmitted fields are found and are expressed by three terms. One term is due to the exciting waveguide alone and the other two are due to interaction between two waveguides. The expressions for the exact solutions are further reduced to derive approximate solutions, which could be obtained using the ray theory of diffraction with a modified diffraction coefficient.

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