Rectangular Microstrip Yagi Array Antenna for Wifi Applications

Abstract

Wifi requires an additional external antenna with high gain so that its range increases. This paper discusses the design of a rectangular-microstrip Yagi array antenna for Wifi applications (2.4 GHz). The antenna consists of element driven and several parasitic elements, including reflector and director. The antenna is made in the form of an array consisting of 2 branches and each branch consists of 2 level directors. The antenna was realized using dielectric material with a relative permittivity of 4.3. Based on measurements, the value of return loss S11 is −15.42 dB at the frequency of 2.4 GHz. The gain obtained is 9.08 dB with bidirectional radiation patterns. The array method is proven to increase gain compared to antennas which only have 1 branch and 2 director levels.