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A novel compact low‐pass filter using defected ground structure
Author(s) -
Chen XiaoQun,
Wang LingXia,
Shi XiaoWei
Publication year - 2009
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.24139
Subject(s) - stopband , microwave , cutoff frequency , low pass filter , insertion loss , cutoff , electronic engineering , filter (signal processing) , electrical engineering , engineering , topology (electrical circuits) , optoelectronics , materials science , physics , band pass filter , telecommunications , quantum mechanics
In this article, a novel gradual change defected ground structure (DGS) for low‐pass filter (LPF) design is presented and analyzed. The proposed DGS combined with open stubs is presented to enhance the out‐band suppression. The equivalent circuit model and simulated results for the DGS are used to determine the dimension parameters. Based on gradual change structure, the LPF with cutoff frequency f c of 3.1 GHz has presented good measured characteristics, including low insertion loss of 0.325 dB and wide stopband from 3.4 to 10 GHz below −35 dB. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 792–795, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24139