International Journal of Engineering Research in Computer Science and Engineering (IJERCSE)

High Gain Vivaldi Antenna for Radar and Wi-Fi Application

Author : Dr.J.Manikandan ¹ R. Karthikaa Devi ² M. Sushmitha ³ R. Pooja ⁴

Date of Publication :10th July 2019

Abstract: In RADAR,WIFI and many other applications a variety of antennas has been used for various range frequencies. The antenna should also have a directional radiation pattern .Vivaldi antenna is a type of antenna in which the frequency range can be made very wide and hence a single antenna can be used for various applications The designed vivaldi antenna is operating for a frequency of 2.2GHz to 5GHz and 6GHz to 11GHz with below - 10dB impedance bandwidth and is designed on low cost FR4 substrate of thickness 1.6mm. The length and width of the antenna is about 20X20 mm and radius of the curve is 11 mm. Further, the Vivaldi antenna is modified at its edges which results in improvement in gain significantly along with increased directivity. The proposed antenna shows nearly stable radiation patterns throughout this frequency. A high gain compact Vivaldi antenna is with its reduced construction and wide bandwidth is presented for RADAR and WIFI applications.

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