Tunable balanced bandpass filter with high common-mode suppression

被引：15
|
作者：
Zhao, Xiao-Lan [1 ]
Gao, Li [1 ]
Xu, Jin-Xu [1 ]
机构：
[1] S China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R China
来源：
ELECTRONICS LETTERS | 2015年 / 51卷 / 24期
关键词：
band-pass filters; resonator filters; tuning; UHF filters; tunable balanced bandpass filter; common mode suppression; CM suppression; half wavelength resonator; frequency; 0; 84 GHz to 1; 15; GHz;
D O I：
10.1049/el.2015.1922
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 Letter presents a novel tunable balanced bandpass filter with high common-mode (CM) suppression by using discriminating coupling. Four half-wavelength resonators terminated with varactors are utilised to obtain the tunable responses. The high CM suppression is realised by discriminating coupling between feeding structures and resonators, which blocks the CM signals. An experimental tunable balanced bandpass filter is implemented which achieve the continuous tuning range from 0.84 to 1.15 GHz and more than 50 dB CM rejection levels.
引用
收藏
页码：2021 / 2022
页数：2
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