International Journal of Research in Electronics & Communication Technology (IJRECT)
In this paper, the authors present the dual band circular shape patch antenna at 4.1GHz and 5.3 GHz using CST. The two operating frequencies can have the same polarization planes or orthogonal polarization planes. This antenna can be considered to consist of two connected resonators of different sizes. A dual band circular shape microstrip patch antenna is analyzed using CST software. This antenna is based on a thickness of 1.6mm Flame Retardant 4 (FR-4) substrate with a dielectric constant of approximately 4.4.