Performance Analysis of Rectangular Patch Antenna for Different Substrate Heights

Abstract: Height of the dielectric substrate material for a microstrip patch antenna is utterly important in terms of controlling bandwidth as well as surface wave. In this paper we have presented a comparative study of effect of height in the performance parameters of Rectangular Shaped Microstrip Patch antenna. The antennas were simulated for purpose of the application of wireless LAN for resonance frequency 2.45GHz. Five antennas with different heights were designed using same dielectric substrate material with relative permittivity of 2.84 for the analysis of their performances. Coaxial Probe-feed methods are used for feeding techniques. This paper along with the comparison of performance parameters like VSWR, Reflection coefficient, Bandwidth, Impedance, Mismatch loss, Directivity, Gain and Field, also presents the effect of substrate height in design parameters like width, length, feed point location, ground dimension for each patch antenna. This study was carried out by using FEKO, Electromagnetic solver software which uses Method of Moments (MoM) technique.

Keywords: Microstrip, Fringing field, Reflection coefficient, VSWR, FEKO