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2014•Progress In Electromagnetics Research COpen access

MINIATURIZED MICROSTRIP PATCH ANTENNA WITH DEFECTED GROUND STRUCTURE

Hanae Elftouh, Naima Amar Touhami, Mohamed Aghoutane, Safae El Amrani, A. Tazón, Mohamed Boussouis

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Abstract

The aim of this work is to miniaturize a microstrip patch antenna resonating at 3 GHz.For this purpose, defected ground structure (DGS) has been employed to shift the resonance frequency of an initial microstrip antenna from 5.7 GHz to 3 GHz by disturbing the antenna's current distribution.The proposed DGS is incorporated in the ground plane under the patch antenna to improve its performances.Finally, a miniaturization up to 50%, with respect to the conventional microstrip antenna, is successfully accomplished.A prototype of the antenna was fabricated with the FR4 substrate and tested.The measurements results were in good agreement with simulation results.

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What this paper is about

The aim of this work is to miniaturize a microstrip patch antenna resonating at 3 GHz.For this purpose, defected ground structure (DGS) has been employed to shift the resonance frequency of an initial microstrip antenna from 5.7 GHz to 3 GHz by disturbing the antenna's current distribution.The proposed DGS is incorporated in the ground plane under the patch antenna to improve its performances.Finally, a miniaturization up to 50%, with respect to the conventional microstrip antenna, is successfully accomplished.A prototype of the antenna was fabricated with the FR4 substrate and tested.The measurements results were in good agreement with simulation results.

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Available abstract

The aim of this work is to miniaturize a microstrip patch antenna resonating at 3 GHz.For this purpose, defected ground structure (DGS) has been employed to shift the resonance frequency of an initial microstrip antenna from 5.7 GHz to 3 GHz by disturbing the antenna's current distribution.The proposed DGS is incorporated in the ground plane under the patch antenna to improve its performances.Finally, a miniaturization up to 50%, with respect to the conventional microstrip antenna, is successfully accomplished.A prototype of the antenna was fabricated with the FR4 substrate and tested.The measurements results were in good agreement with simulation results.

Key concepts: Patch antenna, Microstrip antenna, Microstrip, Antenna (radio), Acoustics, Materials science, Physics, Electronic engineering

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