Academic Credentials
  • Ph.D., Electrical Engineering, University of Illinois, Urbana-Champaign, 1979
  • M.S., Physics, University of Illinois, Urbana-Champaign, 1976
  • B.S., Engineering Physics, University of Illinois, Urbana-Champaign, 1974
Professional Honors
  • Tau Beta Pi
  • Phi Kappa Phi
Professional Affiliations
  • Institute of Electrical and Electronic Engineers
  • American Association for the Advancement of Science
  • American Physical Society
  • BioElectroMagnetics Society

Dr. Johnson specializes in electrically related issues particularly as they relate to the electrical environment of power systems. He has extensive experience with the electric and magnetic fields of transmission and distribution systems as well as the audible noise, radio noise, and ozone that may be produced by high voltage power systems. 

Dr. Johnson's work has involved the measurement, modeling, and mitigation of the electrical environment of transmission lines, transformer vaults, and underground/submarine cables. His power system experience includes issues dealing with lightning, electrical transients, ground currents, and stray voltage.

Dr. Johnson has testified on the corona and field effects of DC and AC transmission lines and been a lecturer at the EPRI Transmission Line Design Seminars. He has given numerous presentations and led several workshops on power line design and the electrical environment. He was a principal investigator in the EPRI research on magnetic field sources and methods of shielding.

Dr. Johnson has performed engineering studies related to power system fields, audible noise, radio noise, induced currents, and ground currents for clients including state and federal agencies, utilities, and site developers. Other areas of expertise include investigations of electrically-related fires in devices ranging from consumer appliances to industrial equipment, electrical injury, electrical faults, electronic component failure, code compliance, and facility wiring systems. Prior to joining Exponent, Dr. Johnson was the President of Power Research Engineering, where he worked on engineering issues related to the electrical environment and power quality.