新型缺陷地结构带阻滤波器  

A novel band-stop filter with defected ground structure

作　　者：陈林[1] 李民权[1] 汪炜[1] 何家全[1] 黄魏[1] 

机构地区：[1]安徽大学计算智能与信号处理国家重点实验室,安徽合肥230039

出　　处：《电子元件与材料》2014年第1期32-34,共3页Electronic Components And Materials

基　　金：安徽省教育厅自然科学基金资助项目(No.KJ2011A007)

摘　　要：提出一种W型缺陷地结构（WDGS）单元，该WDGS单元性能优越，结构简单，便于加工。将该单元结构应用于带阻滤波器设计中，有效地提高了滤波器的阻带特性并减小了滤波器的尺寸。详细分析了WDGS单元几何参数对频率和带宽的影响。将三个相同WDGS级联，有效地增大了带阻滤波器的带宽并提高了其对信号的抑制效果。结果表明：该带阻滤波器在2．6-3．4GHz，对信号的抑制从-25dB到-37dB。A novel W defected ground structure （WDGS） was presented, whose structure was simple, the processing was easy and the performance was excellent. After this unit structure was applied to the design of the band-stop filter, its band-stop characteristic was enhanced efficiently and the dimension was reduced. The effects of WDGS geometric parameters on frequency and band width were analyzed. A band-stop filter was built by three cascaded WDGS. The results show that the bandwidth of the filter is increased effectively and the attenuation to signals is improved. The signals rejection of the filter is from -25 dB to -37 dB in 2.6-3.4 GHz.

关 键 词：缺陷地结构 带阻滤波器 微带线 小型化 阻带宽度 低插损 

分 类 号：TN713[电子电信—电路与系统]