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一种基于曲线拟合的微波滤波器参数提取方法 被引量：3

Parameter extraction method for microwave filters based on the curve fitting technique
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摘要 传统的微波滤波器参数提取方法依赖复杂的优化算法,或不适用于有耗情况.针对该问题,提出了一种新的微波滤波器参数提取方法.首先采用曲线拟合技术提取出滤波器端口的加载相位,并对谐振腔的无载品质因数进行估计,然后根据滤波器的全波仿真数据,利用最小二乘法拟合出其对应的导纳参数,进而得到所需的耦合矩阵.采用该方法对两种复杂结构微波滤波器的仿真数据进行了参数提取,结果吻合良好. The traditional parmeter extraction for microwave filters usually depends on complicated optimization,or it is not suitable for lossy condition.This paper presents a new parameter extraction method for microwave filter design.The phase loading effect is analyzed and removed by using curve fitting technology,and then the unloaded quality factor of lossy microwave resonator is estimated.By making use of the least squares fitting method,admittance parameters of the filter can be extracted according to the EM simulation data,and then the coupling matrix is obtained from these parameters.The proposed approach is used to extract the parameters from EM simulation data of two kinds of microwave filters with a complicated structure.Extracted results aggree well with the simulation.
作者 陈建忠 梁昌洪 陈佳 李奇
机构地区 西安电子科技大学天线与微波技术重点实验室
出处 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2011年第4期101-105,123,共6页 Journal of Xidian University
基金 国家自然科学基金资助项目(60901031)
关键词 曲线拟合 耦合矩阵 参数提取 带通滤波器 curve fitting coupling matrix parameter extraction bandpass filter
分类号 TN713 [电子电信—电路与系统]
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参考文献9

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二级参考文献8

  • 1翟阳文,赵永久.矩形波导感性膜片复功率守恒法的分析[J].西安电子科技大学学报,2006,33(4):630-634. 被引量：5
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共引文献17

同被引文献26

  • 1Wang Rui, Xu Jun. Computer-aided diagnosis of lossy mi- crowave coupled resonator filters [ J ]. International Journal of RF and Microwave Computer-Aided Engineering, 2011,21 (5) :519-524.
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  • 3Macchiarella Giuseppe, Traina Daniele. A formulation of the Cauchy method suitable for the synthesis of lossless circuit models of microwave filter from lossy [ J ]. IEEE Microwave and Wireless Components Letters, 2006,16(5 ) :243-245.
  • 4Traina Daniele, Macchiarella Giuseppe, Sarkar Tapan K. New general formulation of the Cauchy method for the accurate model extraction of higher order microwave systems [J]. Microwave and Optical Technology Letters, 2007, 49(8) :1957-1961.
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  • 7Cameron R J. General coupling matrix synthesis methods for Chebyshev filters functions [ J ]. IEEE Transactions on Microwave Theory and Technology, 1999,47 (4) :433-442.
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  • 10Bandler John W, Biernacki Radoslaw M, Chen Shao Hua, et al. Dedign optimzation of interdigital filters using aggressive space mapping and decomposition [ J ]. IEEE Transactions on Microwave Theory and Technology, 1997,45 (5) :761-769.

引证文献3

二级引证文献6

西安电子科技大学学报
2011年 第4期

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