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A modeling method for dumbbell‐shaped DGS and its parameter extraction
Author(s) -
Woo DukJae,
Lee TaekKyung,
Nam Sangwook
Publication year - 2014
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.28736
Subject(s) - dumbbell , equivalent circuit , inductance , capacitance , transmission line , ground plane , microwave , microstrip , capacitor , topology (electrical circuits) , electronic engineering , coupling (piping) , line (geometry) , electric power transmission , physics , engineering , electrical engineering , mechanical engineering , voltage , mathematics , geometry , telecommunications , medicine , electrode , quantum mechanics , antenna (radio) , physical therapy
This article presents an equivalent circuit model for a dumbbell‐shaped defected ground structure (DGS) in a microstrip line. The effects of equivalent circuit elements of a dumbbell‐shaped DGS and their magnetic coupling to the host transmission line are modeled as a simple lumped‐element circuit. By adding a virtual capacitor on the narrow etched gap, the values of inductance and capacitance of the dumbbell‐shaped DGS in the ground plane were extracted. Also, other main circuit parameters of the proposed circuit model were extracted using EM simulation result. This article provides one approach for understanding the operating principle of the DGS structures. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2910–2913, 2014