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

Wireless Communication is the need of today world communication. In the paper proposed antenna is designed for enhancing the range of wifi communication. Various antenna used for this purpose for example Vivaldi antenna, Horn antenna, monopole antenna, folded dipole antenna,microstrip patch antenna with slot and defect ground structure etc. in the paper firstly proposed antenna is designed at 5.8GHz for wifi communication, after that antenna is made ultra wide band by applying DGS technology to the ground so that the range of wifi communication can be increased. An antenna is considered ultra wide band if its bandwidth is greater than 500MHz.Designed antenna give the return loss of 12.71db at 5.793GHz .It gives the bandwidth of 89MHz .It also gives the gain of 6.937dB ,and it also give a value of Electric field distribution is 22.68*103V/m Now the DGS technology applied to the ground plan of the designed antenna. It also reduces the size of the antenna. It give the return loss 15.66dB at 5.10 GHz, frequency is shifted because of using DGS in the ground plane. it gives the bandwidth of 1.4GHz which is far better than the base antenna in which the bandwidth was 89MHz.antenna is also become the ultra wide band because its bandwidth is greater than 500MHz.antenna gain is 3.503dB 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 34.06*103 it is also increased in very high amount. It can be said that antenna bandwidth increased in very high amount, it will increases the range of wifi communication.