A Compact Dual-Band Quasi-Elliptic Filter Employing Meander-Line-and CRLH-Based SIW Triplets  

作　　者：Yilong Zhu Yuandan Dong Lin Gu Deisy Formiga Mamedes Jens Bornemann 

机构地区：[1]School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China [2]Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China [3]Department of Electrical and Computer Engineering,University of Victoria,Victoria,BC V8W 2Y2,Canada

出　　处：《Electromagnetic Science》2024年第3期79-85,共7页电磁科学（英文）

基　　金：supported in part by the Natural Sciences and Engineering Research Council(NSERC)of Canada;in part by the China Scholarship Council(Grant No.202006070154).

摘　　要：A compact dual-band quasi-elliptic filter with high selectivity is developed and investigated in this communication.It employs two hybrid-structure substrate integrated waveguide(SIW)triplets,which show completely inverse transfer responses under the same conditions of inductive cross coupling.The first meander-line-based triplet is able to produce a transmission zero(TZ)above the passband.Whereas the second SIW triplet,which is composed by a composite right/left-handed(CRLH)resonator,creates a TZ below the passband.By utilizing these features,a dual-band quasi-elliptic filter based on SIW dual-mode resonances(TE101 and TE201),whose operating frequencies are allocated at 8 GHz and 10 GHz,is designed for demonstration.The design process,principles,and experiments are carefully described in this communication.The measured and simulated results are in good agreement,indicating excellent electrical performance with low loss,compact device size and high selectivity.The most notable point is that a dual-band quasi-elliptic filter on SIW platforms is obtained with all inductive couplings for the first time,which shows a unique benefit in eliminating negative-coupling structures while permitting miniaturization for SIW dual-band filter design.

关 键 词：Dual-band quasi-elliptic filter High selectivity Compact size Meander-line and CRLH resonators Substrate integrated waveguide 

分 类 号：TN713[电子电信—电路与系统]