Open Resonator with Fragment of Circular Waveguide: Model Computation and Experiment

Abstract

A hemispherical open resonator (OR) with the fragment of circular waveguide in the centre of a flat reflector is investigated. The TE_01q oscillation mode of such a resonance system is analyzed. The OR of the said geometry is experimentally studied. The existence of only one oscillation mode TE_01q within the tuning range of about 12 percent in the 4-mm wavelength band is shown. In addition, an amplitude distribution of electrical field component of the studied oscillation mode has the shape of a ring. The resonator model offered describes the processes in such a resonance system with sufficient working accuracy.