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A compact low‐pass filter with double‐step impedance shunt stub and defected ground structure for wideband rejection
Author(s) -
Lee JaeKwan,
Lee DongHyo,
Kim YoungSik
Publication year - 2010
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.24883
Subject(s) - stub (electronics) , wideband , microwave , shunt (medical) , electrical impedance , low pass filter , electronic engineering , bandwidth (computing) , cutoff frequency , engineering , cutoff , acoustics , electrical engineering , physics , telecommunications , quantum mechanics , medicine , cardiology
Abstract In this letter, a compact low‐pass filter (LPF) with wideband rejection using double‐step impedance shunt stub (SISS) and barbell‐type defected ground structure (DGS) is presented. This proposed LPF has similar characteristics in bandwidth, but good wideband rejection and cutoff sharpness compared with the same size conventional LPF, using SISS and conventional DGS. The size reduction of the proposed LPF is about 23% more than the conventional one. Good agreements are achieved between the simulated and measured results. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 132–134, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24883