Planar Dipole Antenna with and without Circular Parasitic Element

This paper describe the design of planar dipole antenna with circular parasitic element. The comparison between the planar dipole antenna with and without parasitic element has been presented followed by a discussion of the design. The simulation process was carried out using microwave office and CST software. These antennas were fabricated using inexpensive Fire Retardant-4 (FR4) board, using wet etching techniques. The S11 result shows the operating frequency is between 2.08 GHz and 3.48 GHz for planar dipole antenna with parasitic element. For planar dipole antenna without parasitic element, two ranges of operating frequency is between and 2.1 GHz and 3.08 GHz and another one operational frequency was found at 4.04 GHz and 4.98 GHz.