文章描述了一种侧壁耦合波导滤波器的设计方法,详细探讨了侧壁耦合结构,并在对侧壁耦合分析的基础上,使用CST软件仿真了一部TE113模侧壁耦合滤波器,实现了四阶椭圆函数特性,仿真结果与实测结果吻合良好。另外,对寄生耦合与简并模式耦合机构之间的关系也进行了深入探讨。%This paper presents a design method about a new type side-wall coupling circular waveguide filter.The special coupling is discussed in detail from the point view of electromagnetic wave,and a filter with TE113 dominant mode is simulated with CST,the results is according with experimental data.A ingenious approach rejecting spurious coupling brings into effect.
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