HARMONIC-REJECTED COMPACT BANDPASS FILTER USING DUAL-MODE MICROSTRIP RESONATOR WITH ADDITIONAL OPEN STUB

被引：0

作者：

Yun, Tae-Soon ^{[1
]}

Nam, Hee ^{[2
]}

Lee, Byungje ^{[2
]}

Choi, Jin-Joo ^{[2
]}

Kim, Jin-Young ^{[2
]}

Lee, Jong-Chul ^{[2
]}

机构：

[1] Honam Univ, Dept Radio Mobile Commun Engn, Kwangju 506714, South Korea

[2] Kwangwoon Univ, Dept Wireless Commun Engn, Seoul 139701, South Korea

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2010年 / 52卷 / 10期

关键词：

dual mode; bandpass filter; transmission zero; inverter; harmonic rejection; TRANSMISSION ZEROS;

D O I：

10.1002/mop.25457

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 article, a compact dual-mode lambda(g)12 bandpass filter with the characteristic of harmonic rejection is designed and implemented. The second and third harmonics of the suggested bandpass filter are rejected by using the additional open stubs of the T-type equivalent circuit for the quarter wavelength line. Also, the J-inverter is investigated as functions of the impedance and electrical length of the open stub of dual-mode lambda(g)12 resonator. From the results, the lower impedance of open stub of dual-mode lambda(g)12 resonator is better for the good performance of the dual-mode lambda(g)12 bandpass filter. The harmonic-rejected dual-mode lambda(g)12 bandpass filter shows the characteristic of suppression of harmonics until 8 GHz and the insertion and return losses of 0.96 and 18.89 dB, respectively, at the center frequency of 2.43 GHz. (C) 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2288-2291, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25457

引用

页码：2288 / 2291

页数：4

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