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本文比较了等耦合与不等耦合定向耦合器、等间距与不等间距定向耦合器的定向性波段特性。提出了四孔等耦合不等间距定向耦合器的最佳设计方法,并给出了设计数据和曲线。在三厘米波段对实验样品的测试结果与理论结果相符。
In this paper, the directional band characteristics of equal-directional and unequal-directional directional couplers are compared. The optimal design method of four-hole coupling unequal-spacing directional coupler is proposed, and the design data and curves are given. The test results of the experimental samples in the three centimeter band agree with the theoretical results.