新型Koch型缺陷地面结构低通滤波器设计  

Design of Low Pass Filters Based on Koch-shaped Defected Ground Structure

作　　者：李东伟[1] 李天鹏[1] 万鹏飞[1] 

机构地区：[1]空军工程大学导弹学院,陕西三原713800

出　　处：《电讯技术》2011年第6期142-145,共4页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(60971118)~~

摘　　要：提出了一种新型Koch型缺陷地面结构(KDGS),设计了两款基于分形缺陷地面结构的低通滤波器。仿真结果表明:所设计的两种新型低通滤波器3 dB截止频率分别为3.10 GHz和3.20 GHz,10 dB阻带带宽分别为8.75 GHz和12.25 GHz,通带插入损耗均小于0.10 dB。该滤波器设计方法简单,性能好且成本低,在无线通信中很有应用前景。A Koch- shaped defected ground structure（KDGS） is proposed and two low pass filters based on KDGS are designed. Simulation results indicate that the 3 dB cut - off frequency of the designed filters is 3.10 GHz and 3.20 GHz, and the 10 dB bandwidth（insertion loss） 8.75 GHz and 12.25 GHz, respectively, their insertion loss is smaller than 0.10 dB. The design of the proposed filter is simple, and it is featured by good capability and low cost. It will find wide application in wireless communications.

关 键 词：无线通信 低通滤波器 Koch型缺陷地面结构(KDGS) 

分 类 号：TN713[电子电信—电路与系统]