Miniaturized Wearable Fractal Antenna Integrated with RF Transceiver System for Military Applications

This paper presents the design, simulation and implementation of a Fractal antenna of the Koch fractal star, developed with respect to the 4
^th
iteration at 2.4 GHz. The paper employs coaxial feed for the design. The entire antenna dimensions will be approximately (5cm x 5cm). The substrate used is FR4 (flame retardant) epoxy. The simulation and fabrication of the antenna's measurements demonstrate good agreement for the operating frequencies and desirable performance in gain, bandwidth and VSWR (Voltage Standing Wave Ratio) parameters. The VSWR achieved values was lower than 1.4 for the frequencies used. Additionally, the simulations portray a broad radiation pattern and shows good gain and directivity. The fabrication and testing were done using an Anechoic Chamber and network analyser. We have chosen the Koch fractal because of its ability to operate at the specified frequency range mentioned above. Moreover, we can also compare the antenna performance for all the iterations. The application we’re intrigued by is for wearables in the medical telemetry sector due its small size. We will be utilizing Arduino UNO microcontroller and NRF24L01 Trans receiver module to transmitting and receiving temperature and pulse readings from the sensors