National Changhua University of Education Institutional Repository : Item 987654321/10692

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NCUEIR > College of Engineering > eedept > Periodical Articles > Item 987654321/10692

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/10692

Title:	Design of a novel quad-band microstrip BPF using quarter-wavelength stepped-impedance resonators
Authors:	Hsu, Chung-I G.;Lee, Ching-Her;Jhuang, He-Kai
Contributors:	電子工程學系
Date:	2007-02
Issue Date:	2012-05-29T01:21:43Z
Publisher:	Horizon House
Abstract:	In this article, a new quad-band microstrip bandpass filter (BPF) is proposed. The BPF is composed of resonators whose first four resonant frequencies can be tuned to the desired passbands. Each resonator is formed by combining two unequal-size stepped-impedance resonators (SIR) with part of their structures shared. The designed quad-band BPF is implemented on an RT/Duroid 6010 substrate. The measured fractional bandwidths (minimum insertion losses) for the 1.57 GHz (GPS), 2.45 GHz (ISM), 3.55 GHz (WiMAX) and 5.25 GHz (WLAN) bands are 6.4 percent (1.85 dB), 8.2 percent (1.4 dB), 8.7 percent (2 dB) and 12.2 percent (1.06 dB), respectively, which agree well with the simulated results. For miniaturization purposes, the resonators are meandered to give an overall circuit size of only 12.3 � 9.1 mm.
Relation:	Microwave Journal, 50(2): 102-112
Appears in Collections:	[eedept] Periodical Articles

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