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Compact dual‐mode bandpass filter using defected step‐impedance shunt stub
Author(s) -
Liu Haiwen,
Zhang Zhichong,
Shen Li,
Wan Jing,
Shi Liyun,
Guan Xuehui
Publication year - 2011
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.26362
Subject(s) - stub (electronics) , resonator , band pass filter , inductance , electronic engineering , microwave , electrical impedance , dual mode , shunt (medical) , capacitance , coplanar waveguide , acoustics , engineering , optoelectronics , materials science , electrical engineering , physics , voltage , telecommunications , medicine , cardiology , electrode , quantum mechanics
A miniaturized bandpass filter (BPF) using dual‐mode defected ground waveguide (DGW) resonator is developed in this letter.The technique with defected step‐impedance shunt stub is applied to enhance the self‐inductance and self‐capacitance of the DGW loop resonator which leads to size reduction. Compared to the conventional design, the central frequency is reduced by 48%. A good agreement between simulation and measurement verifies the validity of this design methodology. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2673–2676, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop26362