2x2 Array Design of ESPAR Antenna for IoT Communication System

2x2 array design of ESPAR Antenna is proposed for the better IoT communication system. Compared with the single antenna, the array antenna is widely used in the recent communication systems due to its advantages as like higher gains, and better radiation patterns and power efficiency. Also, it is very important to use the array antennas for the faster data rate in any dense communication systems efficiently and for the sensing any target or sensors. However, it is a big challenge to design this array antenna using optimum radiator. In this paper, 13-elements Electronically Steerable Parasitic Array Radiator (ESPAR) antenna with the array of 2x2 is designed and simulated on the FR-4 substrate with the dielectric constant 4.3. The proposed array antenna efficiently shows good match with the mathematical logic by increasing gain. The gains obtained as 4.56 dBi at the single 13- elements ESPAR antenna, 9.61 dBi at the 2x2 array of 13- elements ESPAR antenna, and the reflection coefficient is measured below -10 dB in the designed array at 2.40 GHz frequency.