An Ultra-Wideband Bandpass Filter With an Embedded Open-Circuited Stub Structure to Improve In-Band Performance

被引：37

作者：

Weng, Min-Hang ^{[1
]}

Liauh, Chihng-Tsung ^{[2
]}

Wu, Hung-Wei ^{[3
]}

Vargas, Steve Ramrez ^{[2
]}

机构：

[1] Met Ind Res & Dev Ctr, Med Devices & Optoelect Equipment Dept, Taipei, Taiwan

[2] Kun Shan Univ, Dept Mech Engn, Yung Kang 710, Taiwan

[3] Kun Shan Univ, Dept Comp & Commun, Yung Kang 710, Taiwan

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2009年 / 19卷 / 03期

关键词：

Bandpass filter (BPF); notched band; open-circuited stub; ultra-wideband (UWB); RESONATOR;

D O I：

10.1109/LMWC.2009.2013733

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 letter, we present a compact ultra-wideband bandpass filter (BPF) with a notch band in the BPF performance by using an embedded open-circuited stub structure. The filter mainly consists of conventional stepped impedance resonator (SIR) as the multiple-mode resonator and two enhanced coupled input/output lines. The bandwidth can be analyzed by using the image-parameter method to obtain the proper dimension of the coupled lines and verified by using electromagnetic (EM) simulation. The embedded open-circuited stub structure in the SIR is used to produce a narrow notched band at 5.8 GHz, which its frequency position and bandwidth can be tuned by its physical parameters. The measured 3 dB fractional bandwidth of 113.8% and narrow notched band with 25 dB rejection is achieved. Good agreement between the EM simulation and measurement is obtained.

引用

页码：146 / 148

页数：3

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