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An improved asymmetric defected ground structure cell and its application to lowpass filter
Author(s) -
Fu ShuHong,
Tong ChuangMing,
Shen Kai
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.24778
Subject(s) - passband , stopband , microwave , low pass filter , elliptic filter , microstrip , filter (signal processing) , transition band , materials science , electronic engineering , band pass filter , physics , acoustics , engineering , electrical engineering , prototype filter , telecommunications
An improved asymmetric defected ground structure cell is presented and analyzed. Based on this structure, a microstrip lowpass filter with low passband loss and high stopband suppression is designed and fabricated. Measured passband losses are below 1 dB, and a sharp slop is obtained at passband frequency fringe. The suppression is no <30 dB in stopband from 2.98 to 10 GHz. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2933–2935, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24778