Topics addressed include practical illustrations of parameters,such as finding matching network component values. The primary objectives of this article are to review the Smith charts construction and background, and tosummarize the practical ways it is used. The complex voltage reflection coefficient Γ \Gamma \, is defined as the ratio of the reflected wave to the incident (or forward) wave. Smith chart: Upon which this article concentrates. ) The blue circle, centered within the impedance Smith chart, is sometimes called an SWR circle (short for constant standing wave ratio). The Smith chart can be used to simultaneously display multiple parameters including impedances, admittances, reflection coefficients, S n n S_. It was independently devised by Tōsaku Mizuhashi ( 水橋東作) in 1937, and by Amiel R. The Smith chart (sometimes also called Smith diagram, Mizuhashi chart ( 水橋チャート), Mizuhashi–Smith chart ( 水橋スミスチャート), Volpert–Smith chart ( Диаграмма Вольперта-Смита) or Mizuhashi–Volpert–Smith chart), is a graphical calculator or nomogram designed for electrical and electronics engineers specializing in radio frequency (RF) engineering to assist in solving problems with transmission lines and matching circuits. For the similar term Volpert graph, see Volpert graph (disambiguation). The User Friendly Smith Chart By RadCom Technical Editor Peter Dodd G3LDOGeneral ec natrucuen oltheSmith chart calculator would be plotted on an impedance.
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