Phillip Hagar Smith
Phillip Hagar Smith (April 29, 1905 – August 29, 1987) was an electrical engineer, who became famous for his invention of the Smith chart. Smith graduated from Tufts College in 1928 with a BS degree in electrical engineering. While working for Bell Telephone Laboratories, he invented his eponymous Smith chart.
When asked why he invented the chart, Smith explained, "From the time I could operate a slide rule, I've been interested in graphical representations of mathematical relationships." In 1969 he published the book Electronic Applications of the Smith Chart: In Waveguide, Circuit, and Component Analysis, a comprehensive work on the subject. He retired from Bell Labs in 1970. He was elected a fellow of the IRE in 1952.
- Philip H. Smith, an oral history conducted in 1973 by Frank A. Polkinghorn, IEEE History Center
- Aziz S. Inan. "Remembering Phillip H. Smith on his 100th Birthday" (PDF). School of Engineering, University of Portland.
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