DESIGN AND IMPLEMENTATION OF VIVALDI ANTENNA

Abstract

In the recent years the development in communication systems requires the development of low cost, minimal weight, low profile antennas that are capable of maintaining high performance over a wide spectrum of frequencies. This technological trend has focused much effort into the design of a Vivaldi Antenna. Since the release by the Federal Communications Commission (FCC) of a bandwidth of 7.5 GHz (from 3.1 GHz to 10.6 GHz) for ultra wideband (UWB) wireless communication UWB is rapidly advancing as a high data rate wireless communication technology. The objective of the design is to achieve return loss better than -10 dB over the desired frequency range of WiMAX, with a gain ranging from 4-9 dB. The minimum half power beam width required in both Azimuth and Elevation planes is 50o , so that the designed Vivaldi Antenna element can be used for wide angle scanning. The designed Vivaldi Antenna has been fed by a strip line that helps in efficient coupling of microwave power to slot line. The triplicate structure of Vivaldi Antenna helps in reducing the spurious radiations from strip line feed. All the designs, simulations and analysis have been done in CST Microwave Studio Suite 2018. The Vivaldi Antenna is then fabricated. The simulated and fabricated results are compared. The Research Paper on “Design and Implementation on Vivaldi Antenna for Wi-MAX Applications” has been presented in the e-conference in National Conference on Recent Trends in IOT, Machine Learning, Artificial Intelligence and its Applications (NCRIMA 2020) organized by Department of Electronics and Communication Engineering on 19-20 June, 2020.