Enhancing EMC in Automotive Electronics Through Grounding Capacitor Impact on 76-108MHz Compliance

This paper investigates grounding capacitors for electromagnetic compatibility in automotive boards within the 76-l08MHz band. An integrated 4700pF capacitor at the IC output significantly reduced noise emissions, with tests showing a Quasi-Peak value drop from 4.36dB to -3.34dB. This demonstrates the capacitor's vital role in meeting stringent RF standards, providing insights for EMC-enhanced automotive electronic design under CISPR 25.