一种快速而准确的谐振腔传输线模型  

Fast and accurate cavity resonant transmission line model

作　　者：路建民[1] 李玉山[1] 蒋冬初[1,2] 曲永哲[1] 闫旭[1] 

机构地区：[1]西安电子科技大学电路CAD研究所,陕西西安710071 [2]湖南城市学院通信与电子工程学院,湖南益阳413000

出　　处：《西安电子科技大学学报》2013年第1期63-67,75,共6页Journal of Xidian University

基　　金：国家自然科学基金资助项目(60871072;60672027);湖南省科技厅科技计划资助项目(2010FJ6015);湖南省自科基金资助项目(10JJ6091)

摘　　要：针对双频点近似的谐振腔传输线模型效率低和精度差的问题,提出了基于Padé逼近的快速算法,同时给出相应的快速而精确的Spice兼容谐振腔模型.与单节电路近似的双频点近似算法相比,由于使用多节的修正电路,所以Padé逼近算法能灵活地调整谐振腔传输线模型的精度和效率,并使模型的精度更高和效率更快.仿真结果表明,在效率上,使用Padé逼近算法的谐振腔传输线模型远高于双频点近似模型,尤其是平行耦合传输线数量较多时;在精度上,Padé逼近的模型的误差低于0.007%,优于双频点近似模型的误差0.3%.For the low efficiency and poor accuracy of the resonant cavity transmission line model based on the double frequencies approximation,this paper proposes a fast algorithm based on Padé approximation and gives the corresponding fast and accurate Spice-compatible resonant cavity transmission line model.Compared with the double frequencies approximation using the single LC resonant circuit,Padé approximation can adjust flexibly and improve the efficiency and accuracy of the model due to using multiple LC resonant circuits.Simulation results show that the efficiency of Padé approximation is higher than that of the double frequencies approximation,especially when the number of transmission lines is great,and that the error of Padé approximation is less than 0.007% and is better than the error 0.3% of double frequencies approximation.

关 键 词：PADÉ逼近 Spice电路模型 传输线 

分 类 号：TN710.9[电子电信—电路与系统]