The analysis and synthesis of directional couplers on ridge waveguides coupled with the system of rectangular apertures
The analysis and synthesis of directional couplers on single and double ridge waveguides through small rectangular apertures in common wide wall is carried out. The possibility of aperture rotation about the axis is taken into account. Electromagnetic fields and cutoff wave numbers are calculated by method of partial regions including field singularities at the edge. For calculation of couple parameters the Bethe's quasi-static theory is used. The results of wideband directional couplers synthesis with coupling 20 dB are given.