Signal Integrity and Electromagnetic Interference Modeling of a Smartwatch Wearable Device using Structural and Electromagnetic Co-design Methodologies

摘要

In this paper, we demonstrate the use of electromagnetic and structural simulation tools together with DOE and optimization routines to co-design several functional aspects of a smartwatch. We describe various design aspects that require close collaboration between electromagnetics and structural design teams as well as those design tasks that can be carried out independently. In particular, we discuss the design of a LVDS connector interface from a signal integrity perspective along with the RF performance of integrated Wi-Fi, GPS and GSM/Cellular antenna designs. RF interference between the digital interface and antennas is investigated along with EMI mitigation techniques to meet compliance all while achieving mechanical reliability.