The chart was acknowledged as a transmission line calculator owing to its prime purpose of use. It can be most importantly touted as a graphical tool or calculator that assists in displaying and understanding the impedance and frequency values associated with transmission lines with the help of equations. The charts were brought to limelight in the wake of World War II to evaluate the problems associated with the transmission of radio waves.Ī Smith chart can largely be identified as a diagrammatic illustration revolving around the behavior of transmission lines. Coined and developed by Paul Smith, smith charts were essentially deployed to provide electrical, microwave and electronic engineering solutions much before the advent of digital computers.
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