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本文介绍了一种新的渐变截面TE110-TE11{}模式变换器，并采用有限元法及耦合模理论对变换器进行了理论分析。实验测试表明，在12．5～18．0GHz的频率范围内，变换器的电压驻波比小于1.2，而且测试曲线与理论计算曲线有较好的吻合。
In this paper, a new TE110-TE11 {} mode converter with gradual change of cross section is introduced, and the converter is analyzed theoretically by finite element method and coupled mode theory. The experimental results show that the voltage standing wave ratio of the converter is less than 1.2 in the frequency range of 12.5-18.0GHz, and the test curve is in good agreement with the theoretical calculation curve.