Impedance Matching with LC Networks

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  • Author: Ain Rehmann.
The circuits described first are L-networks, consisting of one series and one shunt reactance. These networks are practical for matching a wide range of impedances in narrowband applications. They are commonly used for antenna matching, amplifier matching, and for matching to the inputs and/or outputs of passive circuits such as crystal and ceramic bandpass filters. The two topologies detailed here include one inductor and one capacitor. Although not presented here, Lnetworks with two capacitors and two inductors are also legitimate choices.
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