Microstrip bandpass filters using cross-shaped triple-mode resonator

NCUIR > College of Electrical Engineering & Computer Science > Department of Electrical Engineering > journal & Dissertation > Item 987654321/51972

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/51972

Title:	Microstrip bandpass filters using cross-shaped triple-mode resonator
Authors:	Tu,WH
Contributors:	電機工程學系
Keywords:	STEPPED-IMPEDANCE RESONATORS;TRANSMISSION ZEROS
Date:	2010
Issue Date:	2012-03-28 10:12:14 (UTC+8)
Publisher:	國立中央大學
Abstract:	Compact three-pole microstrip bandpass filters (BPFs) are presented. The basic block is a triple-mode resonator that consists of a conventional half-wave resonator, a shunt open-circuited stub and a shunt short-circuited stub. The half-wave resonator, the shunt open-circuited stub and the shunt short-circuited stub control each of the first three resonant frequencies. Then, two BPFs using the resonator are designed, fabricated and tested to validate the design concept. For the narrow-band BPF, from 2.4 to 2.6 GHz, the measured return loss is greater than 15 dB and the measured insertion loss is less than 1.7 dB. For the broadband one, from 1.25 to 3.9 GHz, the measured return loss is greater than 12 dB and the measured insertion loss is less than 1.5 dB. The group delay variation is 0.45 ns.
Relation:	IET MICROWAVES ANTENNAS & PROPAGATION
Appears in Collections:	[Department of Electrical Engineering] journal & Dissertation

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