The design of semi-circular microstrip patch antenna in supporting wireless body area network technology

This final project aims to design a semi-circular patch microstrip antenna that can work at a frequency of 2.4 GHz (2360 MHz - 2400 MHz band) to support Wireless Body Area Network technology. One of the devices connected to WBAN technology is a Holter monitor and medical data recorder that form a medical network for post-operative or intensive care unit (ICU) patient monitoring. In general, these devices are connected using cables to transmit data, so this method is not practical, especially for patients who have special cases that make it difficult for the patient to move. One device that can be used to reduce the use of cables in this device is a microstrip antenna. To support one of the WBAN technologies, an antenna with gain and bandwidth characteristics is required. To increase the gain and bandwidth, an array method is used on the antenna with an inset feed. The substrate used is FR-4 Epoxy with a dielectric constant of 4.3 and a thickness of 1.6 mm. The antenna design is simulated usingAnsoft High Frequency Structural Simulator (HFSS). The use of the array method on the microstrip antenna can increase the gain up to 132.9%, which is 5.73 dB. The simulation results obtained with a return loss of -17.223 dB with a bandwidth of 88.3 MHz in the frequency range of 2357.6 MHz - 2445.9 MHz.