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A bandpass filter with harmonic suppression using SIR and zigzag coupling
Author(s) -
Guan FuHong,
Gu JianZhong,
Sun XiaoWei
Publication year - 2007
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.22647
Subject(s) - stopband , band pass filter , insertion loss , resonator , microstrip , microwave , materials science , electronic filter topology , filter (signal processing) , zigzag , band stop filter , elliptic filter , optoelectronics , harmonic , electronic engineering , optics , physics , m derived filter , engineering , acoustics , electrical engineering , low pass filter , telecommunications , mathematics , geometry
This article presents a new compact, low‐insertion loss, wide stopband, and narrow‐band microstrip bandpass filter using a step‐impedance resonators. A compact filter operated at 2.13 GHz is designed. Experimental results show that the insertion loss of the filter is 1.08 dB and the upper stopband is extended over 8.5 GHz. The effect of varying the width and shape of the couple line to the performance of the filter has been studied. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2071–2074, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22647