【摘要】 针对传统共面波导弯曲结构传输损耗较大的问题,研究了非对称共面波导弯曲结构.将时域多分辨率分析算法与从Y参数提取c模、π模特性阻抗的方法相结合,推导了二端口两种模式的散射矩阵计算公式.计算了非对称共面波导弯曲结构的传输系数.在理论分析的基础上,提出了一种测试模式间能量转换的实验装置.理论分析和实验结果证明:相对于传统共面波导弯曲结构,非对称共面波导弯曲结构的模式间能量转换更低,传输损耗更小.更多还原

【Abstract】 The asymmetric coplanar waveguide bend was studied for decreasing the insertion loss of coplanar waveguide bend through numerical algorithms and experiments.Combining multi-resolution time domain(MRTD)algorithm and the method of extracting characteristic impedance fromY parameters,a formula for decomposing the signal on asymmetric coplanar waveguide into c andπmodes was derived.The transmission coefficients of the asymmetric coplanar waveguide bend were calculated.Based on the theoretical analysis,a new test fixing was proposed for measuring the mode conversion through vector network analyzer.The theory and experiment results show that compared with coplanar waveguide bend,the asymmetric coplanar waveguide bend has low mode conversion and low insertion loss.更多还原