However, the Smith charts method of displaying data have managed to retain its preference over the years and it remains the method of choice for displaying how RF parameters behave at one or more frequencies with the alternative being tabulating the information.
It was originally developed to be used for solving complex maths problem around transmission lines and matching circuits which has now been replaced by computer software. The Smith Chart, named after its Inventor Phillip Smith, developed in the 1940s, is essentially a polar plot of the complex reflection coefficient for arbitrary impedance. We will look into the types of smith chart, its construction and how to make sense of the data it holds. For today’s tutorial, we will be looking at one of the tools that were developed back then and are still currently being used by engineer for RF designs, behold The Smith Chart.
In today’s age with different software tools, things are a bit easier but if you go back to the periods before computers became this powerful, you will understand how difficult things were. RF Engineering is one of the most interesting and challenging parts of Electrical Engineering due to its high computational complexity of nightmarish tasks like impedance matching of interconnected blocks, associated with the practical implementation of RF solutions.
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