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Electromagnetic Compatibility in the Off-Highway Vehicle Part III: Electromagnetic Emissions (EME)
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Abstract
Electromagnetic emissions (EME) from vehicles and their effect on broadcast radio and television were studied as early as 1944. Their original effect was significantly reduced by the early 1960s. Today, ignition noise (broadband) and vehicular micro-processor-controlled system noise (narrowband) are interfering with Land Mobile (two-way) communication services and other devices such as computers. Two SAE test methods, J551 and J1816, are used to measure this EME. Under development are methods to measure conducted EME on vehicle signal wiring and power input leads. This paper discusses EME measurement methods, provides insight into the sources of EME problems, and gives information on the test instrumentation used to make these measurements.
This paper is the third in a series of papers on electromagnetic compatibility (EMC) in the off-highway vehicle. The first paper was an overview of a complete EMC program with discussion of several important segments. This paper is an in-depth discussion of electromagnetic emissions, what they are, and how they are measured.
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Polonis, J., McGinnis, W., and Martinez, I., "Electromagnetic Compatibility in the Off-Highway Vehicle Part III: Electromagnetic Emissions (EME)," SAE Technical Paper 921654, 1992, https://doi.org/10.4271/921654.Also In
References
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- Brounaugh, E. “The New SAE J1816 for Measurements of Narrowband Electromagnetic Emissions,” 1989 IEEE National Symposium on Electromagnetic Compatibility Denver, CO May 23-25 1989
- Polonis, J. J. McGinnis W. H. “Electromagnetic Compatibility in the Off-Highway Vehicle,” SAE Technical Paper No. 911791 International Off-Highway and Powerplant Congress and Exposition Milwaukee, WI September 9-12 1991
- Polonis, J. J. McGinnis W. H. Martinez I. Jr. “Electromagnetic Compatibility in the Off-Highway Vehicle, Part II,” SAE Technical Paper No. 921654 International Off-Highway and Powerplant Congress and Exposition Milwaukee, WI September 14-17 1992
- Code of Federal Regulations, Number 47, Telecommunication,Part 15-Radio Frequency Devices October 1 1990
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