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The efficiency of different ways for simulating the controlled changes of spectral characteristics of open electrodynamic resonant structures are studied and evaluated in the paper.
The hemispherical open resonator feeding by the rectangular waveguide was analyzed by using the modal analysis method. The open resonator was excited by the rectangular waveguide through a narrow slot, with a complete analysis of all the relevant modes in the waveguide and the open resonator, the coupling coefficients according to the difference width slots were derived among Ka waveband, further...
A compact 2-D finite-difference frequency-domain (FDFD) method is proposed to analyze the propagation characteristics of arbitrary guiding structures. Unlike other FDFD methods, which calculate the propagation constant for a given frequency, this method adopts the technique that is usually used in the compact 2-D finite-difference time-domain method, i.e., extracting the eigenfrequency based on an...
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