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A novel microstrip low‐pass filter design method using square‐shaped defected ground structure
Author(s) -
Vágner Petr,
Kasal Miroslav
Publication year - 2008
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.23692
Subject(s) - chebyshev filter , microstrip , passband , electronic engineering , microwave , filter (signal processing) , ripple , low pass filter , engineering , cutoff frequency , topology (electrical circuits) , electrical engineering , acoustics , band pass filter , physics , telecommunications , voltage
This article deals with novel microstrip low‐pass filter (LPF) design method using defected ground structure (DGS). The DGS allows significant length reduction of inductive microstrip lines, thus overall filter dimensions are reduced. Chebyshev prototype filter design is described and conversion from lumped network structure to microstrip structure with DGS resonators is shown. For given passband ripple and cutoff frequency, a 7th order filter design is described. S‐parameters of proposed LPF are simulated and theoretical results are compared with measurement. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2458–2462, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23692