Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (2): 19-23.doi: 10.3969/j.issn.1000-565X.2013.02.004

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Tuning of Microwave Filters Based on Vector Fitting and Aggressive Space Mapping

Zhang Yong-liang Su Tao Wu Bian Liang Chang-hong   

  1. School of Electronic Engineering, Xidian University, Xi爷an 710071, Shaanxi, China
  • Received:2012-09-04 Revised:2012-11-11 Online:2013-02-25 Published:2013-01-05
  • Contact: 张永亮(1985-),男,博士,主要从事微波无源器件的计算机辅助调试研究. E-mail:namarzhang@163.com
  • About author:张永亮(1985-),男,博士,主要从事微波无源器件的计算机辅助调试研究.
  • Supported by:

    国家"863"计划项目(2012AA01A308);国家自然科学基金资助项目(60901031,61271017)

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Abstract:

In order to fast diagnose microwave filters and save the tuning time, a computer-aided tuning method based on the vector fitting (VF) and the aggressive space mapping (ASM) is presented. In this method, the equivalent circuit parameters of the filter are extracted by using the VF, and the tuning value of tuning screws is predicted through the ASM. Thus, the fast tuning of microwave filters is successfully implemented. The proposed method is then applied to a four-order cross-coupled filter and a six-order Chebyshev filter, with ideal responses being obtained respectively through only three or four iterations, which means that the proposed method is accurate and effective.

Key words: microwave filter, computer-aided tuning, vector fitting, aggressive space mapping