![]() Step 1: Add a serial capacitor to move the impedance to 1 + jx along a constant resistance circle Step 2: Add a parallel inductor to move the impedance to 1 along a constant conductance circle. Smith chart is convenient for transmission line and circuit calculations. Impedance Matching Example 1 The load is at 0.4 + j1.5, the reference impedance is 50. ![]() It is a graph showing both the normalized impedance and the reflection coefficient. The Smith chart can be used to simultaneously display multiple parameters including impedances, admittances, reflection coefficients, S n n. 1 Smith Chart Smith chart is a graphical plot of the normalized resistance and reactance functions in the complex reflection-coefficient plane. 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. ![]() Admittance is the reciprocal of impedance, and it is measured in siemens. The admittance chart is a mirror image of the impedance chart. For other uses of the term Smith diagram, see Smith diagram (disambiguation). Essentially, there are two forms of the Smith chart: the impedance chart and the admittance chart, shown in Figure 10.
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