A compact elliptical substrate integrated waveguide balanced bandpass filter with high-selectivity

被引：0
|
作者：
Xia, Zuxue [1 ]
Cheng, Rui [1 ,2 ]
Xia, Wenhai [2 ]
Cao, Xin [1 ]
Xiong, Xin [1 ]
Hu, Jiayuan [1 ]
机构：
[1] Southwest Univ Sci & Technol, Sch Informat & Control Engn, Mianyang, Peoples R China
[2] Zhejiang Lierda Internet Things Technol Co Ltd, Hangzhou 311100, Peoples R China
来源：
JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS | 2025年
基金：
中国国家自然科学基金;
关键词：
Elliptical substrate integrated waveguide; compact; balanced filter; high-selectivity; source-load coupling; spurline; gap coupling;
D O I：
10.1080/09205071.2025.2482775
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel quarter-mode elliptical substrate integrated waveguide resonator (QMESIWR) is proposed to design a compact balanced bandpass filter (BPF) with high selectivity. Metal columns are integrated to enhance common-mode suppression. By leveraging source-load coupling (SLC), spurlines, and coupled bandgaps, five transmission zeros (TZs) are generated outside the passband, improving frequency selectivity. C-slot lines and gap coupling strengthen dual-resonator coupling, further optimizing performance. Measurements align with simulations, demonstrating operation at 4.2 GHz (3 dB bandwidth: 180 MHz) with >27 dB in-band common-mode suppression and >70.8 dB out-of-band suppression. This design proves suitable for complex modern electromagnetic environments.
引用
收藏
页数：13
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