基于超材料的多频段微带滤波器  

Multiband Microstrip Filter Based on Metamaterial

作　　者：赵亚娟[1,2] 李宝毅 马晨[1,2] 王东红 王富生[3] ZHAO Yajuan;LI Baoyi;MA Chen;WANG Donghong;WANG Fusheng(No.33 Research Institute of China Electronics Technology Group Corporation,Taiyuan 030006;Electromagnetic Protection Materials and Technology Key Laboratory of Shanxi Province,Taiyuan 030006;School of Mechanics,Civil Engineering and Architecture,Northwestern Polytechnical University,Xi’an 710072)

机构地区：[1]中国电子科技集团公司第三十三研究所,太原030006 [2]电磁防护材料及技术山西省重点实验室,太原030006 [3]西北工业大学力学与土木建筑学院,西安710072

出　　处：《材料导报》2019年第S02期70-72,共3页Materials Reports

基　　金：国家自然科学基金(51875463);装备预研重点实验室基金(33KJ1707JJ039B)~~

摘　　要：本工作设计了一种基于超材料的小型化多频段微带滤波器。基于超材料的相位补偿原理,通过将方块型超材料单元结构加载于接地板,实现微带滤波器的小型化设计,滤波器整体尺寸仅为25 mm×25 mm(0.38λ0×0.38λ0,λ0是低频段的导波波长)。通过对四开口型谐振环(Split ring resonator,SRR)微带线馈电,获得多频段滤波器设计。测试结果表明,滤波器的谐振点为2.4 GHz、3.4 GHz和5.5 GHz,工作频带内插入损耗最大值为0.85 dB,具有小型化、多频段、低损耗的特点。A compact multiband microstrip filter based on metamaterial is designed in this work.The metamaterial filter has a compact size of 25 mm×25 mm(0.38λ0×0.38λ0,λ0 is the guided wavelength of lower band)and miniaturization is realized by using the phase compensation principle of metamaterial.Multiband characteristic is obtained by using four-SRRs.The measured results show that the metamaterial filter works at 2.4 GHz,3.4 GHz and 5.5 GHz,the insertion loss maximum is 0.85 dB in the band.Therefore,the metamaterial filter has the characteristics of miniaturization,multiband and low loss.

关 键 词：超材料 小型化 多频段 滤波器 

分 类 号：TN927.23[电子电信—通信与信息系统]