Design of a new bandpass filter using anti-parallel coupled asymmetric SIRs

被引：5

作者：

Lee, CH ^{[1
]}

Hsu, CIG

Jhuang, HK

机构：

[1] Natl Changhua Univ Educ, Dept Elect Engn, Gifu 500, Taiwan

[2] Dayeh Univ, Dept Elect Engn, Changhua 515, Taiwan

来源：

IEICE TRANSACTIONS ON ELECTRONICS | 2006年 / E89C卷 / 04期

关键词：

bandpass filter; stepped-impedance resonator; transmission zero;

D O I：

10.1093/ietele/e89-c.4.571

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：

in this paper a newly designed internally-coupled asymmetric stepped-impedance resonator (SIR) bandpass filter (BPF) is proposed. The asymmetric SIR structure not only can effectively re duce the circuit size but also can provide two flexibly tunable transmission zeros near the lower and upper passband edges. The first transmission zero is due to the series resonance of the quarter-wavelength open stepped-impedance stub, and the second one is produced by anti-parallel coupling between adjacent SIRs. The proposed BPF was fabricated and simulated using the commercial software HFSS, and agreement between the measured and simulated results was observed. A 0.9-dB insertion loss and a shape factor of 3.6 were achieved in the passband, thus indicating that the proposed filter structure is of practical value.

引用

页码：571 / 575

页数：5

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