Then plot the normalized load impedance on the Smith chart and locate the point that corresponds to the normalized source impedance - this is your target match. To use Smith charts for designing matching networks, you must first determine the impedance of your source and load at the operating frequency, and normalize them to the characteristic impedance of your transmission line. Matching networks can be composed of passive components, such as resistors, capacitors, and inductors, or active components, such as transistors and amplifiers.
One of the applications of Smith charts is to design matching networks, which are circuits that modify the impedance of a load to match the impedance of a source.
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