MUTUAL COUPLING REDUCTION OF MICROSTRIP PATCH ANTENNA ARRAY USING SLOTTED GROUND STRUCTURE

Karthik R, R. K. Manjunath, H. V. Kumaraswamy

Abstract: In microstrip patch antenna array, the mutual coupling is very critical due to surface wave excitation. It leads to degradation in radiation pattern and reduction in gain. In this paper, a method to mitigate mutual coupling effect in an antenna array using Slotted Ground Structure (SGS) at 900MHz and dielectric constant 2.2 is simulated and analyzed using Ansoft HFSS 13. Simulated results show an improvement in mutual coupling, return loss and gain.

Keywords: Mutual coupling, SGS, Patch antenna array, Surface wave, Microstrip patch antenna.

DOI: https://doi.org/10.15623/ijret.2015.0426012