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The aim of the study is the comparison of two directional couplers with one and two cross-shaped coupling holes. The electrodynamic modeling of the electrical characteristics of directional couplers built on the basis of crossed rectangular waveguides using a technology that includes milling of coupling holes was carried out. The dependences of the transmission coefficient of the branched wave and the voltage standing wave ratio at the input on the basic design dimensions in the frequency range for directional couplers with one and two coupling holes are shown. Recommendations for choosing the number of coupling holes depending on the permissible changes in the electrical characteristics of the directional coupler in the operating frequency range are given.
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Rusov et al. (2024) studied this question.
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