基于DSCSRR带通滤波器设计  

A Novel Bandpass Filter Based on DSCSRR

作　　者：原慧[1] 陶建锋[1] 王光明[1] 赵媛莉[2] 

机构地区：[1]空军工程大学导弹学院,三原713800 [2]徐州空军学院,徐州221000

出　　处：《微波学报》2012年第1期85-88,共4页Journal of Microwaves

摘　　要：为提高带通滤波器的选择特性,文章基于逆开口谐振环(CSRR)的构造思路,首先提出一种菱形逆开口谐振环(DSCSRR),并对其左手特性加以证明;然后详细研究了改变其结构参数对DSCSRR传输特性的影响程度;最后设计了一款基于DSCSRR带通滤波器并对所设计的滤波器进行了实物加工和实验测量,测量结果与仿真结果表明,所设计滤波器的中心频率为4.02GHz,选择特性为170dB/GHz,带内抑制小于15dB。该新型滤波器不仅具有选择特性高,而且具有体积小、设计简单等优点。Inspired by CSRR （complementary split ring resonator）, a novel structure named DSCSRR （diamond shaped complementary split ring resonator） was proposed in this article to enhance the selectivity of bandpass filter. And then its left-handed characteristics were presented and its transmission characteristic was studied. In the last a bandpass filter based on DSCSRR was designed and fabricated. The agreement of simulation and measurement results indicates that the proposed filter＇ s working frequency is 4.02 GHz, and its selectivity is 170dB/GHz, and insertion loss 15dB. The proposed filter have some advantages such as high selectivity, simple in design, and also compact in size.

关 键 词：菱形逆开口谐振环 左手材料 带通滤波器 

分 类 号：TN713.5[电子电信—电路与系统]