上海大学学报(自然科学版) ›› 2008, Vol. 14 ›› Issue (6): 557-559 .

• 通信与信息工程 • 上一篇    下一篇

采用阶梯阻抗谐振器的新型小型化双频带带通滤波器

徐贺明,肖中银,胡红虹   

  1. (上海大学 通信与信息工程学院,上海 200072)
  • 收稿日期:2007-07-10 修回日期:1900-01-01 出版日期:2008-12-21 发布日期:2008-12-21
  • 通讯作者: 肖中银

New Compact Dual Band Bandpass Filter Using Stepped Impedance Resonators

XU He-ming, XIAO Zhong-yin, HU Hong-hong   

  1. (School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China)
  • Received:2007-07-10 Revised:1900-01-01 Online:2008-12-21 Published:2008-12-21
  • Contact: XIAO Zhong-yin

摘要:

设计一种新颖的双频带带通滤波器,应用于2.4/5.2 GHz无线局域网WLAN系统.该滤波器采用2个阶梯阻抗谐振器, 通过合理的配置耦合方式,具有非常紧凑的电路结构.实际测量结果显示,该滤波器具有很小的插入损耗,在2个通带内,2.4和5.2 GHz处的插损分别为0.3和0.7 dB, 并且该滤波器具有很宽的通带响应,2个通带的分数带宽分别为30%和17%.测量结果和仿真结果非常吻合.

关键词: 带通滤波器, 阶梯阻抗谐振器, 双频带, 小型化

Abstract:

A new dualband bandpass filter for 2.4/5.2 GHz WLAN systems using two stepped impedance resonators is presented. With a properly coupled structure, this filter appears very compact and easy to fabricate. Measured results show that this filter has very low insertion loss of 0.3 dB at 2.4 GHz and 0.7 dB at 5.2 GHz, and broad fractional bandwidths in both passbands, that is, 30% and 17%, respectively. Measured results are in good agreement with simulation.

Key words:
compact,
bandpass filter (BPF), stepped impedance resonator (SIR), dual band

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