High selective compact dual-band filter using ring resonator with quarter-wavelength stubs

被引：8
|
作者：
Peng, Yatao [1 ,2 ]
Zhang, Lijun [1 ]
Zheng, Zhanqi [1 ]
Leng, Yongqing [1 ]
机构：
[1] Chinese Acad Sci, Inst Microelect, Beijing, Peoples R China
[2] Univ Macau, State Key Lab Analog & Mixed Signal VLSI, Macau, Peoples R China
来源：
ELECTRONICS LETTERS | 2017年 / 53卷 / 24期
基金：
中国国家自然科学基金;
关键词：
UHF resonators; UHF filters; resonator filters; band-pass filters; poles and zeros; coupled transmission lines; high selective compact dual-band filter; ring resonator; frequency; 1; 57 GHz to 2; 45; GHz; coupling lines; circuit parameters; central frequency ratio; selectivity enhancement; transmission zeros; loaded quarter-wavelength stubs; filter layout; dual-band bandpass filters;
D O I：
10.1049/el.2017.3451
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 ring resonator loaded with five open stubs is proposed for the design of dual-band bandpass filters. To shrink the filter layout, a pair of loaded quarter-wavelength stubs is utilised to produce the first passband. On the other hand, the introduced coupling between the quarter-wavelength stubs and the ring resonator produced transmission zeros for enhancing the selectivity. Both bandwidth and central frequency ratio of the two passbands can be adjusted freely by the circuit parameters. Two coupling lines are added beside the resonator as feed-lines to construct a filter with high selectivity and compact size. A filter at 1.57/2.45 GHz is designed, fabricated and measured for verification.
引用
收藏
页码：1589 / 1591
页数：2
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