Miniature dual-band bandpass filter using modified quarter-wavelength SIRs with controllable passbands

被引：18

作者：

Ren, Baoping ^{[1
,2
]}

Ma, Zhewang ^{[1
]}

Liu, Haiwen ^{[3
]}

Guan, Xuehui ^{[2
]}

Wen, Pin ^{[1
,2
]}

Wang, Xiaolong ^{[1
]}

Masataka, Ohira ^{[1
]}

机构：

[1] Saitama Univ, Grad Sch Sci & Engn, Saitama 3388570, Japan

[2] East China Jiaotong Univ, Sch Informat Engn, Nanchang 330013, Jiangxi, Peoples R China

[3] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Xian 710049, Shaanxi, Peoples R China

来源：

ELECTRONICS LETTERS | 2019年 / 55卷 / 01期

基金：

日本学术振兴会; 美国国家科学基金会;

关键词：

resonator filters; microstrip filters; band-pass filters; microwave filters; UHF filters; microwave resonators; UHF resonators; dual-band BPF; controllable passbands; dual passbands; modified quarter-wavelength stepped-impedance resonator; /4; SIRs; miniature dual-band bandpass filter design; independent geometrical parameters; coupling strengths; centre frequencies; multiple transmission zeros; source-load coupling; frequency; 5; 8; GHz; 2; 35;

D O I：

10.1049/el.2018.6702

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 modified quarter-wavelength (/4) stepped-impedance resonator (SIR) is proposed to design a miniature dual-band bandpass filter (BPF). The proposed /4 SIR has two individually controllable resonances for constructing dual passbands. Moreover, two independent geometrical parameters are adopted to realise individual adjustment of the coupling strengths between two adjacent /4 SIRs at the dual passbands. As a result, both the centre frequencies and bandwidths of the two passbands of the filter can be individually designed. Furthermore, multiple transmission zeros are created by the introduced source-load coupling, which improves highly the selectivity of both passbands. The dual-band BPF is designed at 2.35 and 5.8 GHz, and its simulated and measured responses are presented and show good agreement.

引用

页码：38 / 39

页数：2

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