Comparison between Rectangular Microstrip Patch Antenna with and without Defected Ground Structure at 1.85 GHz

To achieve the object design, we investigated a Microstrip Patch Antennas with a Defected Ground Structure (DGS) in the horizontal foundation plane. In this, the authors have proposed a rectangular patch with defected ground structure (DGS) to modify its parameters, especially antenna bandwidth. A rectangular-shaped parallel DGS is proposed to achieve a desirable bandwidth in the ground plane. This defect on the ground plane increased the fringing fields, increasing its parasitic capacitance. This change in design increases the coupling between the upper and lower surface, which increases the bandwidth from the patch antenna without DGS. A sequential parametric investigation has been done to identify the specification of the aerial be contingent on its various geometrical parameters. The different geometrical parameters of the aerial are up to the extended properties of the patch and horizontal foundation planes and the segregation amongst them, and it involves the dielectric constant of the matrix material. Defected Ground Structure is an etched symmetrical or non-symmetrical amalgamation of organization in the horizontal foundation plane of MPA, which modifies the circumference domain allocation in the horizontal foundation plane due to the cause of the defect in the ground. DGS technique is used to enhance its parameters and mainly the bandwidth of the Radiators.