华南理工大学学报(自然科学版) ›› 2009, Vol. 37 ›› Issue (1): 10-14.

• 电子、通信与自动控制 • 上一篇    下一篇

基于组合多通带谐振器的三频滤波器设计

陈付昌 褚庆昕   

  1. 华南理工大学 电子与信息学院, 广东 广州 510640
  • 收稿日期:2008-02-22 修回日期:2008-03-31 出版日期:2009-01-25 发布日期:2009-01-25
  • 通信作者: 陈付昌(1982-),男,博士,主要从事射频电路研究. E-mail:fc.chen@mail.scut.edu.cn
  • 作者简介:陈付昌(1982-),男,博士,主要从事射频电路研究.
  • 基金资助:

    国家自然科学基金资助项目(U0635004)

Design of Triple-Band Filter Based on Assembled Multiband Resonator

Chen Fu-chang  Chu Qing-xin   

  1. School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2008-02-22 Revised:2008-03-31 Online:2009-01-25 Published:2009-01-25
  • Contact: 陈付昌(1982-),男,博士,主要从事射频电路研究. E-mail:fc.chen@mail.scut.edu.cn
  • About author:陈付昌(1982-),男,博士,主要从事射频电路研究.
  • Supported by:

    国家自然科学基金资助项目(U0635004)

摘要: 为得到三个通带中心频率及带宽均可独立调节的三频滤波器,提出了一种基于组合多通带谐振器的三频滤波器设计方法.首先采用阶跃阻抗谐振器和半波长谐振器构建组合多通带谐振器;然后分别采用级联型和伪交指型的耦合结构设计了两种三频滤波器,每种结构都有足够的自由度来获得所需的带宽和中心频率;最后设计并加工了两个工作在2.45、3.50和5.25GHz的三频滤波器.测量结果与仿真结果吻合良好,验证了文中三频滤波器设计方法的有效性.

关键词: 三频滤波器, 组合多通带谐振器, 带通滤波器, 阶跃阻抗谐振器, 微带

Abstract:

In order to obtain triple-band bandpass filters with independently-controlled center frequencies and bandwidths, this paper presents a novel design method of triple-band filters based on the assembled multiband resonator. In this method, first, a stepped impedance resonator and a half-wavelength resonator are both employed to construct an assembled muhiband resonator. Then, two kinds of triple-band filter configurations with cascaded and pseudo- interdigital formats are designed, both of which possess sufficient freedom to satisfy the requirements of bandwidth and center frequency. Finally, two filters operating at 2.45, 3.50 and 5.25 GHz are designed and fabricated. The measured results of the filters accord well with the simulated ones, meaning that the proposed design method is feasible.

Key words: triple-band filter, assembled muhiband resonator, bandpass filter, stepped impedance resonator, microstrip