Vehicle Electromagnetic Emissions: Challenges and Considerations

Current automotive electromagnetic compatibility (EMC) standards consider fixed laboratory and test setups for the assessment of the radiated emissions from the whole vehicle. This paper presents measured results, based on exploratory methodologies that associate the electromagnetic (EM) emissions with the vehicle's driving state, including during its phase of acceleration, deceleration and under different velocities. Additionally, we have concluded that the viewing angle around the vehicle is critical for the identification of the actual maximum radiated EM emissions, as well as, the contribution of frequencies below 30 MHz.