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Compact microstrip lowpass filter for harmonics suppression using a new defected ground structure
Author(s) -
Yang Yang,
Zhu Xi,
Karmakar Nemai C.
Publication year - 2012
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.26809
Subject(s) - stopband , microstrip , harmonics , stub (electronics) , low pass filter , attenuation , microwave , electronic engineering , acoustics , physics , engineering , electrical engineering , filter (signal processing) , band pass filter , telecommunications , optics , voltage
A compact microstrip lowpass filter (LPF) for harmonics suppression is proposed. An open stub LPF with uniquely shaped defect ground structure cells is used to optimize the LPF performance. A stopband attenuation of greater than 20 dB is obtained from 3.42 GHz to more than 18 GHz. The physical size of the proposed LPF, excluding transmission lines, is only 10 × 15 mm 2 . Good agreements between simulation and measurements are observed. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1385–1387, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26809