Microstrip bandpass filters using cross-shaped triple-mode resonator

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题名:	Microstrip bandpass filters using cross-shaped triple-mode resonator
作者:	Tu,WH
贡献者:	電機工程學系
关键词:	STEPPED-IMPEDANCE RESONATORS;TRANSMISSION ZEROS
日期:	2010
上传时间:	2012-03-28 10:12:14 (UTC+8)
出版者:	國立中央大學
摘要:	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.
關聯:	IET MICROWAVES ANTENNAS & PROPAGATION
显示于类别:	[電機工程學系] 期刊論文

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