These can be divided into two general groups: web based courses and software tools. With the improvement of the graphical and calculation capabilities of personal computers, different realizations of the Smith chart have appeared. In fact, most of the current findings of internet search engines to the 'Smith Chart' words are still linking to such printed material. Traditionally, the Smith chart has been used in the form of hard-copy diagrams. Due to the huge importance of the Smith Chart usage, it has be included as a topic in the most of the courses related to radio frequency (RF) designs. The Smith Chart allows to graphically solve impedance matching problems, such as the matching of an arbitrary load impedance to a given transmission line or the matching of two lines with different characteristic impedances. Abstract:The Smith Chart has demonstrated for long to be an excellent graphical tool in assisting to the solution of wave-guides and transmission lines problems, by avoiding the need of long and tedious calculation procedures.
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