DESIGN OF COMPACT MICROSTRIP BAND-PASS FILTER WITH ULTRA-WIDE STOPBAND

被引：1

作者：

Hsu, Ko-Wen ^{[1
]}

Tu, Wen-Hua ^{[1
]}

机构：

[1] Natl Cent Univ, Dept Elect Engn, Tao Yuan 32001, Taiwan

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2010年 / 52卷 / 07期

关键词：

microstrip band-pass filter; quarter-wavelength resonator; stepped impedance resonator; wide stopband; RESONATORS; WAVELENGTH;

D O I：

10.1002/mop.25238

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 microstrip band-pass filter with compact structure and ultra-wide stopband using quarter-wavelength stepped impedance resonators is proposed. Because of the optimal design for stepped impedance resonators, circuit size is reduced and harmonic response is suppressed. To suppress the higher resonant modes further. two open stubs connected to the input/output ports are used to achieve an ultra-wide stopband. The design procedure and additional lateral-resonated response are discussed in detail. As the presence of the two attenuation poles are around the passband edge. high selectivity and good performance is realized. The proposed filter with a fundamental frequency f(0) of 0.9 GHz, measured insertion loss of less than 1.5 dB, return loss of better than 16 dB, and wide stopband up to 19 f(0) is demonstrated. The stopband level is lower than 23 dB from 1.1 GHz up to 17.1 GHz. (C) 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1603-1606,2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25238

引用

页码：1603 / 1606

页数：4

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