Patch Antenna Array With A Parasitic Slotted Technique For Dual-Band Operation Over S-Band

A microstrip patch antenna is used due to its advantages in communication systems and for various purposes. However, it suffers from fundamental disadvantages that must be addressed: low gain and low bandwidth. This paper presents a simple, low-cost antenna with a low-profile design suitable for array applications. An increase in gain and dual-band resonance frequency was achieved. The antenna is printed on a substrate with [relative permittivity Er=4.08, thickness = 1.5mm]. and feed using a coaxial prop feed structure. A CST software tool was used for the simulation process. A slotted parasitic antenna achieved high gain and dual bandwidth with linear polarization along the frequency beams. The antenna consists of the main radiator with a parasitic element supported by slot technology. An array of 6 antenna elements is formed with a distance equal to 80 mm to achieve a reflection coefficient S11 <= -22 with gain equal to 13db & 11.6 dB along with the operational bands.