A narrow bandwidth microstrip band-pass filter with symmetrical frequency characteristics

被引：11

作者：

Jun, DS ^{[1
]}

Lee, HY ^{[1
]}

Kim, DY ^{[1
]}

Lee, SS ^{[1
]}

Nam, ES ^{[1
]}

机构：

[1] ETRI, Basic Res Lab, Taejon, South Korea

来源：

ETRI JOURNAL | 2005年 / 27卷 / 05期

关键词：

band-pass filter (BPF); parallel-coupled; end-coupled;

D O I：

10.4218/etrij.05.0204.0069

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：

This letter proposes a band-pass filter (BPF) with two transmission zeros based on a combination of parallel coupling and end coupling of half-wave transmission lines. The fabricated BPF exhibited a narrow bandwidth and two transmission zeros near the pass-band due to the end-coupled and shielding waveguide. At the center operation frequency of 60 GHz, the 20 dB bandwidth of the BPF is 1.0 GHz, which is almost 2% of the center operation frequency, and the insertion loss is 3.12 dB. Two transmission zeros reach approximately 40 dB at 58.5 and 62.5 GHz. The simulation results almost agree with the measured results.

引用

页码：643 / 646

页数：4

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