Novel Compact Wideband Bandpass Filter Using Microstrip and Coplanar-Waveguide Resonators With Good Harmonic Suppression

被引：0

作者：

Deng, Kuan ^{[1
]}

Feng, Wenjie ^{[1
]}

Che, Wenquan ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Dept Elect Engn, Nanjing, Peoples R China

来源：

APMC: 2009 ASIA PACIFIC MICROWAVE CONFERENCE, VOLS 1-5 | 2009年

关键词：

Microstrip; CPW; bandpass filter (BPF); harmonic suppression;

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 compact wideband bandpass filter (BPF) is presented and experimentally validated in this letter. The described filter consists of microstrip resonator and CPW resonator designed on different layers, has compact size and strong coupling strength and then achieves good wideband performance. By adjusting the coupling electric length between resonators and the adding trapeze-form patch, good harmonic suppression can be expected. One prototype is fabricated and measured to demonstrate the validity of the design idea, good agreement with theoretical expectation can be observed. The measured insertion loss is less than 0.5dB in the whole passband of 3.4-5.5GHz (about 47.2% fractional bandwidth), and a wide stopband bandwidth with 20 dB attenuation goes up to at least 18.5 GHz. The second harmonic suppression is better than -35dB (8.7GHz), while the third harmonic suppression is better than -25dB (13.3GHz).

引用

页码：2497 / 2500

页数：4

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