National Changhua University of Education Institutional Repository : Item 987654321/10722

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NCUEIR > College of Engineering > eedept > Periodical Articles > Item 987654321/10722

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/10722

Title:	Band-notched UWB BPF design using combined modified quarter-wavelength TSSIR
Authors:	Lee, Ching-Her;Hsu, Chung-I G.;Chen, Lian-Yu
Contributors:	電子工程學系
Date:	2009-12
Issue Date:	2012-05-29T01:23:53Z
Publisher:	Institution of Engineering and Technology
Abstract:	This study presents a new band-notched ultra-wideband (UWB) bandpass filter (BPF) that is designed using a new structure-shared multi-mode resonator (MMR). The MMR is formed by combining two quarter-wavelength (/4) tri-section stepped-impedance resonators (TSSIRs) in a proper fashion to exhibit both /4 and half-wavelength (/2) types of resonance. With the first two resonant frequencies of the inherent /4 TSSIR, the first two of the parasitic /2 SIR and the coupling peaks of the input/output interdigital parallel-coupled lines properly located in the UWB passband, a six-transmission-pole UWB BPF can be realised. In this filter design, besides obtaining a uniform in-band transmission response, a notched band centred around 5.5 GHz is created by embedding L-shaped open-end slots in the TSSIR and loading the TSSIR with closely coupled winding-type resonators (WTRs) to filter out the 5-GHz wireless local-area network radio signal interferences. In addition, spur-lines are embedded in the TSSIR to sharpen the passband skirts for selectivity improvement.
Relation:	IET Microwaves, Antennas &Propagation, 3(8): 1232-1236
Appears in Collections:	[eedept] Periodical Articles

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