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一种双U形缺陷地结构低通滤波器的设计

Design of a Double U-shaped Defected Ground Structure Low-pass Filter
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摘要 基于双U形缺陷地结构设计了一种低通滤波器。首先利用三维电磁场仿真软件分析了双U形DGS结构的S参数频响特性,然后利用该DGS结构加工制作了DGS结构低通滤波器,实验室测得该滤波器3 d B截止频率为3.26 GHz,通带范围内波纹最大是0.4 d B。插入损耗大于20 d B的阻带宽度为5.2 GHz。 A low-pass filter using double U-shaped defected ground structure（ DGS） is proposed in this paper. The frequency characteristics of the DGS are simulated with three-dimension electromagnetic field analysis software. Then a low-pass filter using DGS is designed and fabricated. The measured 3 d B cutoff frequency is 3. 26 GHz with 0. 4 d B ripple level. The rejection bandwidth of the insertion loss more than 20 d B is 5. 2 GHz.
作者 徐华 朱宗和
机构地区 杭州电子科技大学天线与微波技术研究所
出处 《杭州电子科技大学学报（自然科学版）》 2015年第4期23-25,共3页 Journal of Hangzhou Dianzi University：Natural Sciences
关键词 缺陷地结构 低通滤波器 截止频率 defected ground structure low-pass filter cutoff frequency
分类号 TN713.4 [电子电信—电路与系统]
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参考文献7

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二级参考文献9

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共引文献3

杭州电子科技大学学报（自然科学版）
2015年 第4期

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