Slotted 1×2 Array Antenna With Defective Ground Plane For 5G Millimeter Wave Applications

In the present world, the array antennas are most valuable for 5G mm-Wave applications due to high gain, compact size and the having simple structure. This paper proposes a compact millimeter wave array antenna for 5G application. The proposed array antenna structure provides wide bandwidth, high directivity and operates from 21.4 to 27.3 GHz. The proposed antenna has the structure of 1×2 array patch elements and three different structures of slots on the ground plane which helps in achieving the 5G mm-wave range of application. The geometrical dimensions of the array antenna 2.35λ×1.7λ×0.12λ in wavelength measurement. The proposed array antenna shows the resonating frequency range from 21.4 to 27.3 GHz and the central frequency of the array antenna is at 24.35 GHz. In the simulated measurement, the impedance bandwidth ranges from 21.4 to 27.3 GHz and the fractional bandwidth of 24.23%. The proposed array antenna is designed by using CST software and the performance of an array antenna is analyzed by using a parametric analysis process by varying the dimensions of the antenna. The simulations and all analysis process is carried out using the CST software tool.