Dual-fed rectangular ring slotted patch antenna

In this work, a dual-fed rectangular ring slot patch antenna is designed and simulated. Compared to a common microstrip patch antennas, designed and simulated dual frequency patch antenna offers size reduction and higher gain. Simulation results showed input match of −11.77 dB at 4.1214 GHz and theta-polarized electric field gain of 8.26 dB at Θ = ± 20° at 4.1214 GHz.