An Analysis of Antipodal Vivaldi Antenna (APVA) Using Different Material Substrates at 60 GHz

Abstract

The 60GHz short-range wireless communication system has gained a lot attention because it is believed to have a high rate data communications with free licensed frequency band. Thus, development of the 60 GHz antenna is a crucial issue in the system. This paper is focused on the design of antipodal vivaldi antenna (APVA) at 60GHZ for wireless communications. The antenna is designed by comparing the performance using three different types of material substrates which are Silicon, Ferro A6s and Duroid 5880. The parameters to be observed in this paper include radiation pattern, bandwidth and gain of the antenna. The performance of the antenna is simulated by using CST Microwave Studio with the ranges frequency between 50GHz to 70GHz. The changes in the performance between three different types of material substrate are discussed further in this paper. From the simulation results, the value of return loss is as the desired results, where it needs to be less than -10dB for the three different types of substrate used. Out of the three substrates, Ferro has a better antenna performance radiation pattern and wider bandwidth, which makes it suitable to be used as a 60GHz antenna for wireless communication.