A Compact Rectangular Patch Antenna with Defected Ground Structure for Multiband Applications

This paper investigates the design and radiation performance of rectangular patch antenna using a Defective Ground Structure (DGS) for multiband applications. The proposed structure is designed using FR-4 substrate. On one side of the substrate, a rectangular patch is printed whereas, on the other side of the substrate, dumbbell-shaped DGS is created. The antenna is simulated using HFSS software. To verify the simulated results, a prototype of the structure is fabricated, and measurements are taken. The multiband operation is achieved by introducing DGS of dumbbell shape. The proposed design has five resonant frequencies at 2.638, 3.84, 6.72, 10.67, and 13.78 GHz. The proposed antenna can be used for multiband applications.