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Matching of quasioptical open resonators with waveguide feeders

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Radiophysics and Quantum Electronics Aims and scope

Abstract

We consider a semisymmetric open resonator (OR) included in a waveguide feeder, in which the first higher-order mode is excited. We show that a high efficiency of excitation of the mode can be achieved by appropriate choice of coupler dimensions due to the matching of structures of the exciting and operating fields.

We analyze the behavior of the resonance reflection and transmission coefficients as well as the loaded Q-factor of an OR as functions of the parameters of one-dimensional E-polarized diffraction gratings located in a coupler aperture with dimensions of a few of wavelengths. Calculations are made with allowance for the resonance and excitation losses. The numerical results differ from the experimental data by no more than 13%, which allows one to construct open resonance systems with the required properties by changing the parameters of diffraction gratings in the coupler aperture.

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Authors
  1. I. K. Kuz’michev
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Institute of Radiophysics and Electronics, National Academy of Sciences of Ukraine, Kharkov, Ukraine Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 43, No. 4, pp. 325–334, September, 2000.

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Kuz’michev, I.K. Matching of quasioptical open resonators with waveguide feeders. Radiophys Quantum Electron 43, 294–302 (2000). https://doi.org/10.1007/BF02677194

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  • DOI: https://doi.org/10.1007/BF02677194

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