Segments of oversized waveguides in open resonant systems

Abstract

The article discusses a hemispherical open resonator (OR) with a segment of circular or coaxial waveguide in the center of the plane mirror. Excitation efficiency for axially symmetric TE₀₁ and TM₀₁ modes in a circular and TEM and TE₀₁ in coaxial waveguides with help of TEM_01q, TE_01q and TM_01q OR modes is analyzed. It shows that the efficiency of excitation of these waves can be reached 90% in case of the appropriate choice of geometric dimensions of resonator.