具有多传输零点的微带传输线滤波器设计

doi:10.13190/jbupt.201205.77.zhuyzh

北京邮电大学学报 ›› 2012, Vol. 35 ›› Issue (5): 77-80.doi: 10.13190/jbupt.201205.77.zhuyzh

具有多传输零点的微带传输线滤波器设计

朱永忠, 赵志远

武警工程大学通信工程系

收稿日期:2011-11-05 修回日期:2012-05-11 出版日期:2012-10-28 发布日期:2012-07-06
通讯作者: 朱永忠 E-mail:bsbs1980@sina.com
作者简介:朱永忠（1980-），男，副教授，E-mail：haiyihaiyi@hotmail.com
基金资助:
国家自然科学基金项目(61101238)；陕西省自然科学基金研究计划项目（2010JQ8026）

Design of a Microstrip Transmission Line Filter with Transmission Zeros

ZHU Yong-zhong, ZHAO Zhi-yuan

Department of Communication Engineering,Engineering University of the Chinese Peoples Armed Police Force

Received:2011-11-05 Revised:2012-05-11 Online:2012-10-28 Published:2012-07-06
Contact: Yong-Zhong ZHU E-mail:bsbs1980@sina.com

摘要/Abstract

摘要：

提出一种非对称两腔发夹型滤波器的设计方法. 应用传输矩阵分析了2种串联传输线型谐振器与传输响应零点之间的关系,依据奇偶模激励法得出了并联耦合型传输线滤波器的传输响应公式,结合这些特点,设计了一种可以产生3个传输零点的两腔滤波器,在含源负载交叉耦合的情况下,突破了现有滤波器N个谐振器才能产生N个传输零点的局限,进一步提高了滤波器的频带选择特性.实测结果验证了该方法的正确性.

关键词: 滤波器, 传输线, 传输零点, 奇偶模

Abstract:

A design method for asymmetric two-cavity hairpin filter is proposed. Firstly, by using transmission matrices, the relation between the types of serial coupled microstrip transmission line and transmission zeros of transfer response is analyzed. and then, the transmission response formula of the parallel-coupled transmission line filter is derived through even and odd-mode excitations. The serial and parallel microstrip line structures are applied to the design of a two-pole microstrip hairpin filter with asymmetric feed. A N-order cross coupling network with source-load coupling can realize a maximum number of transmission zeros that can equal to N. Compared with source-load coupling, the new two-pole hairpin filter which can obtain three transmission zeros has improved selectivities. A good agreement between measured and simulated data has been reached.

Key words: filter, transmission line, transmission zero, even and odd-mode

中图分类号:

TN713. 5

朱永忠, 赵志远. 具有多传输零点的微带传输线滤波器设计[J]. 北京邮电大学学报, 2012, 35(5): 77-80.

ZHU Yong-zhong, ZHAO Zhi-yuan. Design of a Microstrip Transmission Line Filter with Transmission Zeros[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2012, 35(5): 77-80.

参考文献

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具有多传输零点的微带传输线滤波器设计

Design of a Microstrip Transmission Line Filter with Transmission Zeros

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