Analysis and design of microstrip patch antenna for S-band applications

In this work, the radiation characteristics of the microstrip fed rectangular patch antenna is analyzed for 2.4 GHz applications. The microstrip patch antenna consists of a pair of electrically conducting layers separated by a 1.5 mm dielectric material. The RT Duroid 5880 is used as dielectric substrate and it has dielectric permittivity of 2.2. Low dielectric constant substrates are essential for getting maximum electromagnetic radiation in the desired direction. Previous researches on this domain expressed the difficulty to achieve the high gain (>2dB), broad impedance bandwidth and better radiation efficiency. The proposed antenna yielded a gain greater than 7.7dB in 2.386–2.414 GHz band. The simulation has been performed by using HFSS, which is a finite element method(FEM) based electromagnetic solver.