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Bandpass filter with wide stopband using broadside-coupled microstrip T-stub/DGS cell

✍ Scribed by Xun Luo; Jian-Guo Ma; Erping Li

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
467 KB
Volume
53
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A bandpass filter with wide stopband is proposed using the novel broadside‐coupled microstrip T‐stub/defected ground structure cells in this letter.The resonance of the proposed cell is finely adjusted. Besides, these cells with a proper coupled‐structure (i.e., interdigital coupled scheme) can achieve high selectivity only around the resonance, which leads to wide stopband operation. The measured filter operated at 2.2 GHz (i.e., center frequency f~0~) exhibits a wide stopband up to 9.1 f~0~ with a good rejection level greater than 30.5 dB. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26101

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