Dual-Band Bandpass Filter with Multiple Controllable Transmission Zeroes and Wide Stopband

被引：0
作者：
Li, Daotong [1 ]
Zhang, Yonghong [1 ]
Ai, Jing [1 ]
Song, Kaijun [1 ]
Fan, Y. [1 ]
机构：
[1] Univ Elect Sci & Technol China, Chengdu, Peoples R China
来源：
MICROWAVE JOURNAL | 2017年 / 60卷 / 06期
基金：
中国国家自然科学基金;
关键词：
MICROSTRIP RING-RESONATOR; COMPACT;
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：
A dual-band bandpass filter with multiple controllable transmission zeroes (TZ) and wide stopband performance is based on a single quadruple-mode circular ring resonator (Q-CRR). The two passbands are generated by using degenerate modes. After installing two parallel coupled feed line sections on a ring at the two ports with 90 degrees separation and two openended tri-section stepped-impedance resonators (OT-SIR) loaded on the I/O ports, eight TZs are produced in the stopband. By tuning the length and the impedance ratio of the OT-SIR and the length of the parallel-coupled feed lines, the locations of the TZs are adjusted. Measured results show good agreement with simulation.
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页码：88 / +
页数：7
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