Open AccessA NOVEL COUPLED-DEFECTED GROUND STRUCTURE WITH ENHANCED COUPLING-COEFFICIENT AND ITS APPLICATION IN FILTER DESIGN
Author(s) -
Sisi Chen,
Lin Li,
Zhiyong Chen
Publication year - 2015
Publication title -
progress in electromagnetics research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.245
H-Index - 33
ISSN - 1937-6480
DOI - 10.2528/pierl15020502
Subject(s) - coupling coefficient of resonators , coupling (piping) , filter (signal processing) , electronic engineering , materials science , topology (electrical circuits) , computer science , optoelectronics , engineering , electrical engineering , composite material , resonator , computer vision
A novel coupled-defected ground structure (C-DGS) with inductors inserted between the adjacent defected ground structure (DGS) cells is presented in this paper. In comparison to conventional C-DGS structure, the proposed C-DGS exhibits a larger coupling-coefficient, resulting in a wider stop-band. Moreover, the stopband can be adjusted flexibly without modification since the coupling- coefficient varies with the change of the inductance of the inserted inductor. Based on this new C-DGS, a low-pass filter (LPF) using cascaded C-DGS is constructed. The proposed structure is experimentally verified through the demonstration of a low-pass filter design.
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