Design of Symmetrically Slotted Ultra Wide Band Antenna with DGS for Wi-Fi Communication

In the paper antenna is proposed to work for increasing the range of WIFI communication .initially antenna is designed at 5.8GHz for WIFI communication. After that symmetrical slot of size 5*5mm2 has been introduced into the simple DGS patch and because it is symmetrically slotted also became circularly polarized. Rectangular slot of size 7*5.5mm2 has been employed to the ground plane of the antenna so that antenna became ultra wide band and can be used for increasing the range of WIFI communication. An antenna is considered ultra wide band if its bandwidth is greater than 500MHz.Simple Rectangular Microstrip Patch Atenna (RMPA) give the return loss of 12.71db at 5.793GHz and gives the bandwidth of 89MHz .It also gives the gain of 6.937dB ,and give a value of Electric field distribution is 22.68*103V/m. Symmetrical slots has been applied to the antenna, DGS technology is also has been applied to the ground plan of the proposed antenna. It also reduces the size of the antenna. It give the return loss 25.52dB at 6.4GHz, frequency is shifted because of using DGS in the ground plane. it gives the bandwidth of 2.78GHz in the operating band of 4GHz that is far better than the base antenna in which the bandwidth only was 89MHz.antenna is also become the ultra-wide band because its bandwidth is greater than 500MHz.antenna gain is 3.221dB it is reduces as compared to the base antenna because of bandwidth is increased by very high amount, it also verify the relation of gain bandwidth product is constant. Electric field distribution with DGS is 24.33*103 it is also increased in significant amount. It is easily observed that antenna bandwidth increased in very high amount and losses in antenna are also decreased, so that antenna may be used for enhancing the range of WIFI communication.