上海大学学报(自然科学版) ›› 2010, Vol. 16 ›› Issue (4): 367-370.

• 通信与信息工程 • 上一篇    下一篇

基于慢波开环谐振器的双模微带滤波器

张娟,李国辉,王志彬   

  1. (上海大学 特种光纤与光接入网省部共建重点实验室,上海 200072)
  • 收稿日期:2009-03-04 出版日期:2010-08-30 发布日期:2010-08-30
  • 通讯作者: 李国辉(1970~),男,副教授,博士,研究方向为微波光子学. E-mail:ghlee@sh163.net
  • 基金资助:

    上海市重大科技攻关资助项目(07DZ15006);上海市重点学科建设资助项目(S30108);上海市科委重点实验室资助项目(08DZ2231100)

A DualMode Microstrip Filter with SlowWave OpenLoop Resonator

ZHANG Juan,LI Guo-hui,WANG Zhi-bin   

  1. (Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200072, China)
  • Received:2009-03-04 Online:2010-08-30 Published:2010-08-30

摘要:

设计一种新型的基于慢波开环谐振器的双模微带滤波器.该滤波器采用长度变化的微扰方式,增加了开路枝节线作为容性负载,实现了滤波器的小型化设计.与传统结构相比,该滤波器在相同的谐振频率下尺寸减小了19%,具有准椭圆函数响应,在中心频率2.4 GHz处的带宽为4%,且测量和仿真结果比较吻合.

关键词: 双模滤波器;微扰方式;开路枝节;小型化;高选择性

Abstract:

A novel dualmode microstrip filter with a slowwave openloop resonator has been designed. It uses a perturbation arrangement of length change and includes open stubs as capacitive loads, leading to size reduction of the filter. Compared with the traditional dualmode filter at the same design frequency, the proposed filter can significantly reduce the circuit size of 19%, and possesses a quasielliptic response. A bandpass filter with a 4% bandwidth centered at 2.4 GHz has been achieved. The measured results agree well with simulations.

Key words:  双模滤波器;微扰方式;开路枝节;小型化;高选择性

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