采用阶梯阻抗谐振器的新型小型化双频带带通滤波器  

New Compact Dual Band Bandpass Filter Using Stepped Impedance Resonators

作　　者：徐贺明[1] 肖中银[1] 胡红虹[1] 

机构地区：[1]上海大学通信与信息工程学院,上海200072

出　　处：《上海大学学报（自然科学版）》2008年第6期557-559,共3页Journal of Shanghai University:Natural Science Edition

基　　金：东南大学毫米波国家重点实验室基金资助项目(K200602);上海市重点学科建设资助项目(T0102);上海市科委重大科技攻关项目(05dz15004)

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.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.

关 键 词：双频带 带通滤波器 阶梯阻抗谐振器 小型化 

分 类 号：TN713.5[电子电信—电路与系统]