International Journal of Scientific and Research Publication (IJSRP)
The rapid development of wireless communication urges the need of wide and dual band antennas. Microstrip Patch Antennas (MSAs) have found wide spread application in wireless communication industry due to their various advantages such as low cost ease fabrication, linearly and circularly polarization. In this paper, S-shape microstrip patch antenna is investigated for wideband operation using circuit theory concept based on modal expansion cavity model. It is found that the antenna resonates at 2.62GHz. The bandwidth of the S-shape microstrip patch antenna 21.62% (theoretical) and 20.49% (simulated).