Performance Analysis of Patch Antenna with Different Insulating Materials

Abstract

Rectangular Microstrip patch antenna with graphite material at nano regime has been designed using Ansoft HFSS 13.0. The paper emphasizes on the design of a microstrip antenna with rectangular patch for terahertz applications by simulation through the structural optimization according to the desired design specification like width (w) and length (l) and bandwidth of an antenna, relative permittivity (Ɛ_r), and thickness of a substrate are considered for the calculation of patch dimensions. Substrates having the less di-electric constant were usually preferred for better performance hence few materials with less Ɛr are used as the substrate. The conducting element can take any shape because of less complexity to analyse; so rectangular configurations are most commonly used. The different materials are Graphite, Quartz, Silica, Silicon, Polyamide, Aluminium, Gold and FR4 Epoxy which were used in this project. The impedance bandwidth or return loss(S₁₁) and voltage standing wave ratio (VSWR) for the above mentioned materials were observed, analysed and it is proved that the design of the Microstrip antenna at nano scale is suitable for terahertz application. In this work, the comparison analysis for different substrate materials for a graphite based microstrip rectangular patch antenna has been done.