CST – Computer Simulation Technology

Title:
Quasi-Static Analysis of Defected Ground Structure
Author(s):
Nemai C. Karmakar, Sr. , Sushim Mukul Roy, Isaac Balbin, Gerhard F. Swiegers
Source:
TENCON 2005 2005 IEEE Region 10
Vol./Issue/Date:
Nov. 2005
Year:
2005
Page(s):
2430-2434
Keywords:
Defected ground structure, electromagnetic bandgap, photonic bandgap, lowpass filter, frequency spectrum, bandstop filter, high impedance surface
Abstract:
A quasi-static equivalent circuit model of a dumbbell shaped defected ground structure (DGS) is developed. The equivalent circuit model is derived from the equivalent inductance and capacitance developed due to the perturbed returned current path on the ground and the narrow gap, respectively. The theory is validated against the commercial full-wave solver CST Microwave Studio. Finally, the calculated results are compared with the measured results. Good agreement between the theory, the commercially available numerical analyses and the experimental results validates the developed theoretical model.
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