A simple frequency transformation method to obtain propagation constant and mode coupling coefficients of a helix waveguide is introduced. Theoretical TE/sub 01/ mode losses agree well with measured results. Also the transmission characteristics of 5,700 of helix waveguide recently manufactured are described. The inner diameters of them are 51 mm and 60 mm and their unit length is 5 meters.
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机译：介绍了一种简单的频率变换方法，以获得螺旋波导的传播常数和模式耦合系数。理论TE / sub 01 /模式损耗与测量结果非常吻合。还描述了最近制造的5,700个螺旋形波导的传输特性。它们的内径分别为51毫米和60毫米，单位长度为5米。
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