A Tri-band Bandpass Filter with Wide Stop Band Based on Quad-Mode Stub Loaded Resonator

被引：0
|
作者：
Zhao, Zhentao [1 ,2 ,3 ]
Li, Shufang [2 ]
Zhu, Jianfeng [2 ]
Qu, Meijun [2 ]
Kang, Yang [1 ,3 ]
机构：
[1] Minist Publ Secur PRC, Res Inst 1, Beijing 100048, Peoples R China
[2] Beijing Univ Posts & Telecommun, Beijing Key Lab Network Syst Architecture & Conve, Beijing, Peoples R China
[3] Minist Publ Secur PRC, Police Key Lab IoT Applicat, Beijing, Peoples R China
来源：
2017 IEEE 5TH INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY (EMC-BEIJING) | 2017年
关键词：
Tri-band bandpass filter; Stub-to-stub coupling; open-circuited stubs; wide stopband;
D O I：
暂无
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：
This paper presents a tri-band bandpass filter with high design flexibility in symmetrical structure and a wide stopband by using quad-mode stub loaded resonator. Stub-to-stub coupling is introduced to split two identical modes and produce two transmission zeros. The harmonic passband can be typically eliminated by regularly embedding open-circuited stubs in the feeding structure without affecting the performance of the three passbands. A filter prototype is simulated to validate the proposed design. The results show a desired wide upper stopband at 8.8 GHz with rejection better than 20 dB and three passbands are centered at 2.45 GHz, 3.68 GHz, and 5.19 GHz respectively, which is applicable to WLAN and WiMAX applications.
引用
收藏
页数：4
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