EMC Analysis and Estimation Method in IoT Embedded System

Currently, Wi-Fi (Wireless Fidelity) and Bluetooth are essential for communication in everyday life. In the context of the IoT (Internet of Things) the most commonly communication technology is this type of technology. We designed a Printed Circuit Board (PCB) with two Wi-Fi antennas and used filter to also tune one of them for Bluetooth. This structure has been placed inside a system that represent the mechanical part of the device. The complete complex system has been simulated by using ANSYS HFSS v.25R1. The use of far-field data is very promising to study the interaction of multiple devices. Estimating the field emission of PCBs early in the development process helps to ensure compliance with limit values in final antenna measurements, to initiate necessary redesign processes, and to keep costs low. The results obtained demonstrating that established simulation model is suitable for predicting electromagnetic characteristics of a dual-band Wi-Fi and Bluetooth antenna. This is useful for optimizing the design and reducing the prototype cost during the design process.