上海大学学报(自然科学版) ›› 2012, Vol. 18 ›› Issue (5): 459-463.doi: 10.3969/j.issn.1007-2861.2012.05.004

• 通信与信息工程 • 上一篇    下一篇

新型多阶跃枝节加载双频带通滤波器

黄春艳,肖中银,寇鑫,储君君,李好   

  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:2011-11-09 出版日期:2012-10-30 发布日期:2012-10-30
  • 通讯作者: 肖中银(1964~),男,副教授,博士,研究方向为微波与毫米波电路等.E-mail:zhyxiao@staff.shu.edu.cn E-mail:zhyxiao@staff.shu.edu.cn
  • 基金资助:

    国家自然科学基金资助项目(61077068):上海市自然科学基金资助项目(10ZR1411900):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)

Dual-Band Bandpass Filter Using Stub-Loaded Multiple Stepped-Impedance Resonators

HUANG Chun-yan,XIAO Zhong-yin,KOU Xin,CHU Jun-jun,LI Hao   

  1. Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200072, China
  • Received:2011-11-09 Online:2012-10-30 Published:2012-10-30

摘要: 提出一种新型的、各中心频率可调的多阶跃枝节加载双频滤波器,该微带双频滤波器采用多阶跃阻抗结构,通过增加更多的自由度来调节中心频率.由于谐振器为对称结构,所以采用传统的奇-偶模分析方法.通过调整阶跃阻抗的阻抗比和电长度,可以很容易获得一个可独立调节各个中心频率的双频滤波器.该滤波器工作在2.44 GHz(WLAN)和3.50 GHz(WiMAX)这两个频段,3 dB相对带宽分别为6%和2.6%,测试结果和仿真结果基本吻合.

关键词: 带通滤波器, 阶跃枝节加载, 奇-偶模, 双频

Abstract: A novel dual-band filter using stub-loaded multiple stepped-impedance resonators is proposed. This filter can control each center frequency independently. In order to get more degrees of freedom, the microstrip filter uses a multiple stepped-impedance structure. Due to symmetry of the structure, the traditional even-odd mode analysis can be used. A dual-band filter can easily be obtained by adjusting the impedance ratio and electrical length. The dual-band filter with 3 dB relative bandwidths of 6% and 2.6% can be applied to 2.44 GHz (WLAN) and 3.50 GHz (WiMAX), respectively. Simulation results agree well with measurements.

Key words: bandpass filter (BPF), dual-band, even-odd mode, stepped stub-loaded

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