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The intimidating graph, developed by Philip Smith in 1939, is just about as bad as it looks.

Most of you have probably heard of the Smith chart. Identify impedance-matching component values from the Smith chart.Determine the impedance of a load at the end of a transmission line.Plot complex impedances on a Smith chart.Members can download this article in PDF format. So load is purely Resistive. Moreover R L < Z 0.This article is part of the Analog Series: Back to Basics: Impedance Matching If VSWR is finite and equal to 1 then Load is purely resistive with R L = Z 0.ġ. we can see VSWR is finite so we are somewhere inside the circle and as there is minima at load so we are on the line of minima.Ģ. If VSWR is finite(not equal to 1) and neither maxima nor minima occur at load, now if we move away from the load and maxima comes first then load will be inductive.ĩ. If VSWR is finite(not equal to 1) and neither maxima nor minima occur at load, now if we move away from the load and minima comes first then load will be capacitive.Ĩ. If VSWR is finite(not equal to 1) and Minima at load then load will be Purely resistive with R L < Z 0.ħ. If VSWR is finite(not equal to 1) and Maxima occur at load then load will be Purely resistive with R L > Z 0.Ħ. If VSWR is infinite and neither maxima nor minima occur at load, now if we move away from the load and maxima comes first then load will be Purely inductive.ĥ. If VSWR is infinite and neither maxima nor minima occur at load, now if we move away from the load and minima comes first then load will be Purely capacitive.Ĥ. If VSWR is infinite and Minima at load then load will be Short circuit.ģ. If VSWR is infinite and Maxima at load then load will be Open circuit.Ģ. if VSWR is Infinite then load will be anywhere on outer circle otherwise inside the circle.ġ. Now According to VSWR identify where do load can exist. Concept: Consider the points in diagrams shown below.