High-selective wideband bandpass filter with adjustable notched-band using stub-loaded resonator

被引：9
|
作者：
Wang, Y. X. [1 ,2 ]
Zhu, L. [2 ]
Zhang, S. B. [2 ]
机构：
[1] China West Normal Univ, Sch Phys & Elect Informat, Nanchong, Peoples R China
[2] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
来源：
ELECTRONICS LETTERS | 2013年 / 49卷 / 24期
关键词：
band-pass filters; microstrip filters; microstrip lines; network synthesis; notch filters; resonator filters; adjustable notched-band; stub-loaded resonator; high-selective microstrip wideband bandpass filter; BPF; open-ended stub; i >>-2 uniform impedance resonator; microstrip line section; out-of-phase cancellation; dissimilar signal path cancellation; electrical path connection; MODE RESONATOR;
D O I：
10.1049/el.2013.2821
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 high-selective microstrip wideband bandpass filter (BPF) with an adjustable notched-band is proposed. First, a pair of open-ended stubs is tap-connected to a /2 uniform impedance resonator at two symmetrical locations with respect to its centre, and they are further electrically connected by a microstrip line section. Such an arrangement leads to the emergence of a notched-band owing to the out-of-phase cancellation of two dissimilar signal paths in a wide passband. Secondly, the electrical path connecting the two open-ended stubs is gradually tuned so as to adjust the notched-band to the desired frequency location. Finally, a prototype filter is designed and fabricated, and its measured results are provided to verify the predicted frequency response.
引用
收藏
页码：1542 / 1543
页数：2
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