Indonesia Conference Directory

An antenna is the most important part of wireless communication systems. Wifi has an omnidirectional radiation pattern that produces a limited beam range. Therefore, an external antenna with a higher gain is needed than an internal antenna. In this research, a rectangular Yagi microstrip antenna is designed with two levels of directors that can work on the 2.4 GHz frequency (Wifi Application). The selection of the relative permittivity of the dielectric material and setting the antenna dimensions is done carefully to obtain a gain> 5 dB. During the simulation, optimization is done by changing the dimensions of driven, director, reflector, and distance between levels. The simulation results show that the antenna has worked at a frequency of 2.4 GHz with a bandwidth of 209 MHz, a gain of 8,148 dB and a bidirectional radiation pattern. The antenna is realized using a dielectric material with a relative permittivity of 4.3. The antenna measurement results show a bandwidth of 210 MHz and a gain of 7.98 dB. By choosing the relative permittivity of material and carefulness in setting the dimensions of the antenna, it is proven to produce an antenna with gain as targeted, although the antenna only uses 1 branch and 2 levels of directors.