Study the Effect of Double Sided Triangular Defected Ground Structure Technique on Microstrip Patch Antenna Parameters

Ghufran Saady Abd-almuhsen, Noora H. Sherif, Mohammed Hussein Ali


In this paper, a quite simple design of a double-sided triangular patch antenna has been proposed. An efficient technique utilizing the Defected Ground Structure (DGS) has been employed. A simple double-sided triangular slot in the ground plane helped to increase the band-width and shift the resonant frequency from 6.37 GHz to 4.97 GHz without modifying the basic geometry of the antenna. The reflection coefficient of the final design of the proposed antenna showing a good matching at 4.97 GHz with a bandwidth equal 647 MHz, a return loss of less than -10dB and voltage standing wave ratio (VSWR)<2. Microstrip patch antenna (MPA) has been designed and simulated using FEKO simulator software based on FDTD solver. Microstrip line is used to feed the antenna. The simulation results are found to be in good agreement with the measurement’s results. Results indicate that the double-sided triangular defected ground structure is effective in suppressing spurious radiations, and the patch antenna considered here can be widely applied in active integrated communication systems.


Patch; DGS; FEKO; VSWR; return loss.

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