Daniel Durham

Georgia TechElectrical EngineeringES45

Presentation Agenda

• Background• ES45 involvements and research interests• Electromagnetic Compatibility, explained• Parallel Wire Coupling• Other Projects• Acknowledgments• Questions

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Background

• Education:- Georgia Tech- Electrical Engineering- Rising Senior

• Position:- Electromagnetic Compatibility Intern- NASA ES45- Sub-element Lead: Tom Perry- Skill Lead: Rick Houston- Mentor: Mike Crane

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ES45 – Who are we?

• Telemetry• Electromagnetic Environmental Effects

(E3)• Lightning, Solar Flares, ESD, HIRF, EMP• Supporting ISS and SLS• Interference testing

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What is Electromagnetic Compatibility?

• A branch of electrical engineering concerned with mitigating the unwanted generation, propagation, or reception of electromagnetic signals and effects

• Helps to prevent electromagnetic interference (EMI) as well as possible damage to operational equipment

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Parallel Wire Coupling

• Coupling refers to the transfer of energy between circuit mediums

• ‘Crosstalk’ specifically refers to capacitive and inductive coupling (due to electric and magnetic fields)

• Want to be able to predict voltages on one wire due to nearby voltage-induced wires

• Attempting to validate a Boeing Matlab model

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The Setup

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Shielded Victim Wire

Culprit Wire

Voltage Probes

Signal Generator

RF Power Amplifier

Can The Coupling Be Predicted?

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What We Found

• Coupling measurements much higher than those predicted by the model

• Most of the coupling was inductive• Proper shielding procedures cannot be

neglected

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Other Projects

• NSI Fuse Testing• Antenna Design• Power Supply Controller Soldering

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Acknowledgments

• Clint Patton• Tom Perry• Rick Houston• Jacobs Recruiting Team and Human

Resources• The other interns!

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Any Questions?

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