Optimasi Antena Mikrostrip Array menggunakan Metode Air Gap pada Frekuensi 3,5 GHz

The development of telecommunication technology in the field of cellular networks has now entered the 5th generation or 5G. This 5G application has more capable performance than the previous generation so that antenna specifications with wide bandwidth and large gain are needed. The antenna that can be used is microstrip antenna. Microstrip antennas have the advantages of having a light mass, practical, and easy to fabricate. However, there are disadvantages in the parameters obtained, such as narrow bandwidth and small gain. To overcome these disadvantages, you can use the air gap method, where the method can be used to widen bandwidth and increase gain. In this study, optimization has been successfully carried out on the microstrip array antenna using the airgap method at a frequency of 3.5 GHz. The results of the optimization during simulation obtained an increase in bandwidth of 54.28% and an increase in gain of 32.86%. For the realization results, a bandwidth of 280 MHz, and a gain of 9.3 dB were obtained. The substrate used in this antenna is FR4 which has a dielectric constant of 4.4, thickness of 1.6 mm, and loss tangent of 0.019.