一种新型结构的带状线SIR带阻滤波器设计  

Design of a Novel Stripline Bandstop Filter Using SIR Structure

作　　者：朱浩然[1] 孙玉发[1] 

机构地区：[1]安徽大学计算智能与信号处理教育部重点实验室,合肥230039

出　　处：《武汉理工大学学报》2010年第12期102-104,125,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(60771034)

摘　　要：设计了一种新型阶梯阻抗谐振器(SIR)结构的带状线带阻滤波器。在利用带状线间隙电容和并联电感的耦合来设计带阻滤波器时,主线采取城墙线形式,短截线用SIR结构代替常规的λ/4均匀阻抗谐振器(UIR)结构,这样既减小体积,又可以将寄生阻带向高端推移,从而增加通带宽度,使得结构设计得到很大的自由度。最后,利用电磁场仿真软件对结构尺寸进行优化仿真,并实际制作一个中心频率为2.45 GHz的SIR带阻滤波器。实测结果和仿真结果吻合良好,达到预计指标参数。A novel step impedance resonator（SIR） structure is applied to the stripline bandstop filter design in this paper.When the LC coupling is used to design bandstop filter,circumvallation structure is used as the mainline and the SIR structure is used as the short line,which replace the traditional quarter-wavelength uniform impedance resonator（UIR） structure.Then,the volume would be reduced and the pass-band could be widen while more freedom could be obtained in the structure design.Finally,the size of structure can be simulated and modified by using electromagnetic software.A 2.45 GHz SIR bandstop filter is fabricated,and the results measured by experiment are in good agreement with that of simulation.

关 键 词：带阻滤波器 阶梯阻抗谐振器 带状线 

分 类 号：TN713[电子电信—电路与系统]