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Inan, Remembering Phillip H

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The document is a biographical article by A. S. Inan commemorating Phillip H. Smith on his 100th birthday, detailing his life, achievements, and contributions to electrical engineering, particularly the invention of the Smith Chart. It covers Smith's early life, education, career at Bell Telephone Laboratories, development of the Smith Chart, and his legacy in the field of antennas and transmission line analysis.

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What is the purpose of the Smith chart?

William Playfair was a Scottish engineer credited with creating the line chart, bar chart, and pie chart. Image via Wikimedia Commons. What comes to your mind when you think about data visualization? If you thought of a line chart, bar chart, or pie chart youre not alone.

Who invented the first chart?

While the use of paper Smith charts for solving the complex mathematics involved in matching problems has been largely replaced by software based methods, the Smith chart is still a very useful method of showing how RF parameters behave at one or more frequencies, an alternative to using tabular information.

Who invented the Smith chart?

Phillip Hagar Smith Smith chart / Inventor

Is the Smith chart still used?

The chart is named for Phillip Smith, an engineer at Bell Telephone Laboratories, who devised and refined it between 1936 and 1939 while working on understanding transmission lines and standing waves at what was then considered high frequencies of up to 1 MHz (called megacycles per second in those days).