Ultra-Wideband Antenna for Bandwidth Enhancement Telkomsel Orbit Mobile Wifi

This study is about the design and realization of an ultra-wideband antenna to improve the performance of Telkomsel Orbit mobile wifi. The antenna designed is an antenna that operates at the wifi operating frequency in Indonesia, namely 2.4 GHz. It is made of FR-4 Epoxy material which has a relative dielectric constant of 4.3. Modifying the ground plane by cutting it to a size smaller than the feedline greatly affects the bandwidth, return loss, and VSWR. In addition, square slots are also added to the ground plane to enhance the bandwidth value and improve the return loss and VSWR values. The designed antenna produces a return loss value of -20.193 dB, a VSWR of 1.2168, a bandwidth of 360 MHz, a gain of 2.55843028 dBi, and an omnidirectional radiation pattern.

I. Introduction

The development of the telecommunications world is characterized by the existence of 4G Long-Term Evolution (LTE) internet network technology, which facilitates data transmission and communication, both in the form of images, sounds, and other data. 4G technology in Indonesia is currently known as LTE technology [1]. Indonesia itself has many 4G LTE internet service providers, one of which is Telkomsel. However, to provide 4G LTE internet service coverage with adequate connectivity, it must be supported by telecommunications network service infrastructure in the form of Base Transceiver Station (BTS) towers to cover a wider area. Currently, the availability of BTS has not reached all areas including tourist areas.