voltage standing-wave ratio

- For a given transmission line, such as a coaxial cable or waveguide, the ratio of the maximum voltage to the
__minimum____voltage__. It is a measure of the impedance matching of the line. This ratio is__equal__to 1 when there is complete impedance matching, in which case the maximum possible__RF power__that reaches the__load__, such as an__antenna__. Its abbreviation is VSWR. Also called standing wave ratio (1). - acronym VSWR

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