The universal RF matching network described in this article is particularly easy to use, adapt using (free) software and last but not least, easily constructed from readily-available components. We give example component values suitable for use in the 70 cm (440 MHz) band.Matching networks are used in RF design to avoid mismatch where different impedances are involved. Calculation of component values is in practice left to a dedicated program such as the ADLAB shareware package used here. This package was developed by the author and is available for download from his website.
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