The novel class of microwave mode converters based on ridged rectangular waveguides

In this paper the methods and algorithms for electrodynamic analysis and synthesis of mode converters based on ridged rectangular waveguides are considered. Electromagnetic fields and cutoff wave numbers of ridged rectangular waveguides are calculated by the method of partial regions including field singularities at the edge. The method of cross sections with smooth geometry variation is used for mode converter construction. The main difference and advantage over the known mode converter geometries that the only ridge dimensions and position in the waveguide is a subject to smooth variation while the basis rectangular waveguide remains regular.