Abstract
A study using computer simulation of a compact two-mirror symmetric open resonator for use in the X band for measurements of the complex permittivity of flat samples was carried out. The possibilities of minimizing the dimensions of an open resonator with a loaded quality factor of about 104 are investigated. Comparative studies of various coupling elements of an open resonator with a waveguide are carried out. It is shown that coupling elements in the form of a slot on the mirror, which smoothly passes into a standard waveguide, have advantages for use in open resonator for permittivity measurements, compared with coupling elements in the form of a hole in the diaphragm at the end of waveguide on the mirror surface. It is shown that slot coupling elements make it possible to achieve in open resonators almost twice as much field magnitude than coupling elements in the form of holes.
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