A high selectivity dual-band bandpass filter using quadruple-mode multi-stub loaded ring resonator (SLRR)

被引：11
|
作者：
Sun, Mingli [1 ]
Chen, Zhijiao [2 ]
Zuo, Tao [3 ]
Zuo, Zhaoyu [4 ]
Zhang, Anxue [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Xian, Peoples R China
[2] Beijng Univ Posts & Telecommun, Sch Elect Engn, Beijing 100876, Peoples R China
[3] CETC Brainware Elect Technol Co Ltd, China Elect Technol Grp Corp, Hefei, Peoples R China
[4] Xi An Jiao Tong Univ, Sch Phys, Xian, Peoples R China
来源：
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING | 2021年 / 31卷 / 07期
基金：
中国国家自然科学基金;
关键词：
bandpass filter; dual‐ band; multiple transmission zeros; stub loaded ring resonator;
D O I：
10.1002/mmce.22667
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A high selectivity dual-band filter is proposed based on the quadruple-mode multi-stub loaded ring resonator. The ring resonator can utmostly avoid bending the electromagnetic wave. Two external open stubs are employed to generate four transmission poles where the odd- and even-mode is utilized to analyze the resonant frequencies of the BPF. The internal stub effectively reduces the insert loss (IL) by improving the external quality factor Q(e) of the second passband. In addition, five transmission zeros are generated due to the multipath and self-resonance modes to improve the out-of-band selectivity of the proposed filter. The proposed filter centered at 2.65 and 4.84 GHz is designed, fabricated and measured. The simulated results agree well with the measured results.
引用
收藏
页数：5
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