Impedance matching is the chief and consistently used offering from Smith charts along with designing, tuning and validation of similar networks. Example: Impedance Smith Chart (Image Source: ) Each of the circular structure either denotes the constant resistance or constant reactance.
In simple terms, the graph can be considered a collection of circles, where each of the circle is placed at different locations in the plot area. The chart is a basically circular structure constituting of two major circles or arcs, namely the Constant R Circles and the Constant X Circles that help to visually define the shape and the data values incorporated in the chart.
Smith charts play an integral part to evaluate the impedance values of transmission lines in circuits associated with high frequency. Gradually, the charts were effectively opted for various other parameters to visualize as well as analyze complexities of functions to derive accuracy and productivity in results. 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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