Mutual coupling between TEM and TE01parallel-plate waveguide apertures

The coupling between two parallel-plate waveguides is calculated using wedge diffraction techniques. The parallel-plate guides have arbitrary truncation angles and are formed by wedges of arbitrary extent. Calculations of coupling are given for both TEM and
TE_{01}
waveguide modes with guide separations of 0.4 to 2.4 wavelengths. The results for the half-plane and ground-plane cases have been experimentally verified.