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Joshua W. Phinney, Ph.D., P.E.

Senior Managing Engineer

Electrical & Semiconductors

Professional Profile


Dr. Phinney’s background is in electrical and electronic engineering, particularly related to power electronics, electromagnetics, and electromechanics. His specialties include power supplies, radio-frequency electronics, control systems, printed circuits, integrated-circuit packaging, magnetics design, power transmission and distribution. He has related experience in embedded software, acoustics, and numerical methods for optimization and simulation.

At Exponent, Dr. Phinney has assisted clients with identifying the root cause of failures in consumer and industrial electronics, transformers, lighting, and power supplies. He has testified in patent and trade secret litigation regarding computer hardware and software, power supplies, control systems for hard disk drives, and electronic instruments. In addition, Dr. Phinney has assisted clients with electromagnetic assessment issues pertaining to utility and communication infrastructure. These issues include permitting and environmental impact of transmission lines, substations, generation facilities, and electrified mass transit systems.

Dr. Phinney received his Ph.D. in Electrical Engineering from the Massachusetts Institute of Technology. His doctoral work centered on miniaturization of power converters and electromechanical power conversion. He has related experience in radio-frequency electronics (particularly phase-locked loops and RF amplifiers), network synthesis, system identification, and control. Dr. Phinney is the co-inventor on patents for improving the performance of capacitors, EMI filters, and common-mode chokes.

  • Ph.D., Electrical Engineering, Massachusetts Institute of Technology (MIT), 2005
  • S.M., Electrical Engineering, Massachusetts Institute of Technology (MIT), 2001
  • B.S., Electrical Engineering, University of Illinois, Chicago (summa cum laude), 1999
  • B.A., Ancient and Classical Languages, Philosophy, Wheaton College, 1995
  • 2004 IEEE Power Electronics Society Transactions Prize Paper Award (for the paper “Filters with Active Tuning for Power Applications”)
  • 2003 William M. Pormoy Prize Paper Award (Awarded by the Power Electronics Devices and Components Committee of the IEEE Industry Applications Society)

    • Registered Professional Electrical Engineer, New York, #084129

    • Adjunct Professor, Hofstra University, 2008

    • U.S. Patent No. 7,242,269: Filter Having Parasitic Inductance Cancellation, July 2007 (with D.J. Perreault and T.C. Neugebauer).
    • U.S. Patent No. 6,937,115: Filter Having Parasitic Inductance Cancellation, February 2002 (with D.J. Perreault and T.C. Neugebauer).

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