(中國傳媒大學信息工程學院, 北京 100024)
摘要:本文首先介紹了濾波器耦合系數的定義、提取方法;然后基于電磁仿真軟件,分析、仿真了濾波器不同耦合結構對耦合系數的影響;最后設計了一個四腔交叉耦合濾波器和一個六腔直接耦合濾波器,用電磁仿真軟件提取出了兩個濾波器的輸入、輸出耦合系數。用仿真軟件對這兩個濾波器進行了電磁仿真,用軟件的優化模塊對濾波器結構進行了優化,使所設計的濾波器滿足性能指標。
關鍵詞:腔體濾波器;耦合系數;耦合結構;輸入、輸出耦合。
Microwave filter simulation and optimization of coupling coefficient
machong1 chengshaoyang2 yangxiaoxue2 chenxin2
(Information Engineering School , Communication University of China, Beijing 100024)
Abstract:This paper introduces the definition of and the extraction method of the filter coupling coefficient; Then, based on electromagnetic simulation software, assay and simulate the relation of different coupling structure and coupling coefficient; The final, design a four-cavity cross-coupled filter and a six-cavity directly coupled filter, and extracted the two filter input and output coupling coefficient with electromagnetic simulation software. By the optimization modules of electromagnetic simulation software, optimize the filter structure , so that the designed filter to meet performance targets.
Key words: cavity filter; coupling coefficient; coupling structure; Input and output coupling.
參考文獻:
[1]甘本祓.吳萬春.現代微波濾波器的結構與設計(上、下冊)
[2]涂治紅,褚慶昕.廣義Chebyshev濾波器傳輸零點的確定EJ3.電子學報,2008,36(2):2.
[3]周建梅,賈寶富.腔體濾波器設計中多種耦合結構的分析.第七屆全國毫米波亞毫米波會議論文集.南京:南京理工大學,2008:34-37
[4]Jia-Sheng Hong,M.J.Lancaster.Microstrip Filters for RF/Microwave Application.New York:A Wiley-Interscienee Publication.2001
[5]Richard J Cameron.General Coupling Matrix Synthesis Methods for Chebyshev Filtering Functions.IEEE Trans-MTT,1 999,47(4):433-442
[6]Richard J Cameron.Advanced Coupling Matrix Synthesis Techniques for Microwave Filters.IEEE Trans-MTT,2003,51(1):l-10
作者簡介: 馬沖,中國傳媒大學信息工程學院電磁場與微波技術專業碩士研究生,研究方向為微波與衛星通信;