Frequency Reconfigurable Array Antenna with Modified Circular Slot

Abstract

Reconfigurable antennas have obtained significant attention in current mobile communication systems. This work suggested an uncomplicated design of two patches element array antenna integrated with triple intersecting circles slot to realize an array antenna with frequency reconfigurable. The T- junction feeding mechanism was used in this study to achieve the 50 Ohm impedance bandwidth. In the simulation, microwave switches are represented by copper tapes integrated with the circular slot to achieve frequency reconfigurable. The suggested array antenna works in multi-bands with frequency reconfigurable features for implementation in the C-band (5.1–6.38 GHz), (5.15–5.68 GHz), (5.93–6.17 GHz), (5.96–6.22 GHz), (6.30–6.62 GHz), (6.86–7.32 GHz), (6.94–7.34GHz), and (7–7.32 GHz). Hence, the array antenna operates in four switching cases: OFF & ON.