COMPACT DUALBAND FILTER WITH WIDE UPPER STOPBAND

被引：1

作者：

Singh, Pramod K. ^{[1
]}

Basu, Sarbani ^{[1
]}

Wang, Yeong-Her ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Elect Engn, Inst Microelect, Tainan 70101, Taiwan

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2009年 / 51卷 / 03期

关键词：

dualband; bandpass filter (BPF); stepped impedance resonator; open stub; STEPPED-IMPEDANCE RESONATORS; BAND BANDPASS-FILTERS; DESIGN;

D O I：

10.1002/mop.24174

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 dualband filter with wide upper stopband using folded stepped impedance resonators (SIRs) and open stub is presented in this letter. The anti-parallel coupled SIRs are used,for the realization of the dual passband and open stubs for the widening of the upper stopband. The SIRs are folded for the compact filter size. Two different folding structures are investigated for the size compactness and the frequency response of the filter. The wide stopband is useful for suppressing harmonics and noise in the RF circuit. Dualband filters at frequencies of 2.45/5.2.5 GHZ and 2.45/5.75 GHz are realized. The wide and deep upper stopband as well as deep mid-stopband are achieved. The size of the filters are less than 190 mm(2) on a RO 4003C (epsilon(r) = 3.38, h = 0.81 nm) substrate. (c) 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 804-808, 2009: Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24174

引用

页码：804 / 808

页数：5

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