Bandpass filter with wide stopband using broadside‐coupled microstrip T‐stub/DGS cell | Zendy

Luo Xun | Zendy; Ma JianGuo | Zendy; Li Erping | Zendy

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

Author(s) -

Luo Xun,

Ma JianGuo,

Li Erping

Publication year - 2011

Publication title -

microwave and optical technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.304

H-Index - 76

eISSN - 1098-2760

pISSN - 0895-2477

DOI - 10.1002/mop.26101

Subject(s) - stopband , stub (electronics) , microstrip , band pass filter , microwave , transition band , broadside , materials science , electronic engineering , optoelectronics , acoustics , filter (signal processing) , prototype filter , electrical engineering , engineering , physics , low pass filter , optics , telecommunications

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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