利用迭代方法快速分析两腔三传输零点滤波器  

Analysis of Two-Cavity Filter with Three Transmission Zeros Using Iterative Method

作　　者：王元源[1] 谢拥军[1] 朱永忠[1] 

机构地区：[1]西安电子科技大学天线与微波技术国家重点实验室,西安710071

出　　处：《微波学报》2010年第3期56-59,共4页Journal of Microwaves

摘　　要：利用一种基于传输线理论与快速模式变换理论的高效率迭代方法快速分析了复杂的平面微带电路结构。通过在分界面上引入横电磁波的概念代替以往的切向电磁场,加快了计算过程。最终,给出了一种新型的两腔三传输零点微带滤波器的结构参数,利用迭代方法计算其S参数并与主流电磁仿真软件结果进行对比,验证了滤波器结构的有效性及迭代过程对于处理平面微带结构的高效性及准确性。A novel iterative method,which based on the transmission line modeling（TLM） method and the fast modal transformation（FMT） theory,is used for analyzing the complicated planar microstrip circuits.The process of the calculation is carried out by introducing the concept of the transverse electromagnetic waves instead of the tangential fields in the traditional algorithm.At last,a new kind of two-cavity microstrip filter with three transmission zeros is presented.And the S parameters of the structure,which are computed by utilizing the iterative method,are compared with those obtained from the commercial electromagnetic simulating software to reveal the validity of the filter structure and demonstrate the accuracy or efficiency of the iterative process in dealing with the planar microstrip structures.

关 键 词：波概念迭代过程 快速模式变换 两腔三传输零点滤波器 S参数 

分 类 号：TN713[电子电信—电路与系统]