Miniaturized Dual-Band Bandpass Filter With Sharp Roll-Off Using Ring-Loaded Resonator

被引：12

作者：

Li, Daotong ^{[1
]}

Wang, Ju-An ^{[1
,2
,3
]}

Liu, Ying ^{[1
]}

Chen, Zhen ^{[1
,3
]}

机构：

[1] Chongqing Univ, Ctr Commun & Tracking Telemetry Command, Chongqing 400044, Peoples R China

[2] State Key Lab Millimeter Waves, Nanjing 210096, Peoples R China

[3] Chongqing Univ, Sch Microelect & Commun Engn, Chongqing 400044, Peoples R China

来源：

IEEE ACCESS | 2020年 / 8卷

基金：

中国国家自然科学基金;

关键词：

Bandpass filter; compact; dual-band; 0 degrees feed structure; ring-loaded resonator;

D O I：

10.1109/ACCESS.2019.2958390

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, a miniaturized dual-band bandpass filter (BPF) with good selectivity based on ring-loaded resonator (RLR) and 0 degrees feed structure is proposed. First, the RLR is investigated theoretically and numerically, and a miniaturized Filter I is designed based on the RLR and filter synthesis approach. Secondly, based on the coupling structure of the previous BPF and theory of 0 degrees feed structure, the sub Filter II is formed. By appropriately adjusting the location of the I/O ports, the dual-band filter can be achieved simply. The proposed dual-band BPF provides compact size and satisfactory out-of-band rejection between each band with multiple transmission zeros (TZs) introduced by source/load coupling and a special coupling scheme.

引用

页码：25588 / 25595

页数：8

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