Signal integrity against electromagnetic interference from environmental factors using filters in implantable cardiovascular defibrillator

Abstract

This research presents a comprehensive exploration of methodologies aimed at enhancing Electrostatic Discharge (ESD) and Electromagnetic Interference (EMI) mitigation in electronic and medical devices, where failure due to transient events can compromise functional integrity in electronics and pose critical risks to patient safety in medical systems. The study focuses on three critical areas: diodes for ESD protection, RF inductor-based EMI suppression, and spread spectrum analysis for advanced EMI mitigation. These techniques are emphasized due to their proven efficacy, scalability, and compatibility with compact and high-performance circuit environments. Each approach addresses unique challenges while offering optimized solutions for reliable device operation in sensitive and high-stakes applications. For ESD protection, the study examines the application of TVS diodes, focusing on their ability to safeguard sensitive circuits from high-voltage transients as per ISO 10605 standards. This work contributes a comparative and application-driven evaluation of diode behavior, emphasizing selection criteria tailored for automotive and medical reliability. A detailed simulation using LTSpice evaluates the SLD8S26A diode, highlighting its suitability for automotive systems due to its clamping voltage of 42.1V, peak power dissipation of 500W, and surge current handling capacity of 100A. These parameters are benchmarked against ISO 16750-2 and ISO 7637-2 thresholds, showcasing compliance and competitive performance relative to existing protection solutions. newline