非对称共面波导弯曲结构模式转换的研究  

Mode conversion in the asymmetric coplanar waveguide bend

作　　者：陈宏巍[1] 房少军[1] 

机构地区：[1]大连海事大学,信息科学技术学院,辽宁大连116026

出　　处：《电波科学学报》2013年第5期845-850,共6页Chinese Journal of Radio Science

基　　金：国家自然科学基金资助项目(61071044);交通运输部交通应用基础研究项目(2010-329-225-030)

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.The asymmetric coplanar waveguide bend was studied for decreasing the insertion loss of coplanar waveguide bend through numerical algorithms and experi- ments. Combining multi-resolution time domain（MRTD） algorithm and the method of extracting characteristic impedance from Y parameters, a formula for decompo- sing the signal on asymmetric coplanar waveguide into c and π modes was derived. The transmission coefficients of the asymmetric coplanar waveguide bend were cal- culated. Based on the theoretical analysis, a new test fixing was proposed for meas- uring the mode conversion through vector network analyzer. The theory and experi- ment results show that compared with coplanar waveguide bend, the asymmetric eoplanar waveguide bend has low mode conversion and low insertion loss.

关 键 词：非对称共面波导弯曲结构 c模 π模 模式转换 

分 类 号：TN60[电子电信—电路与系统]