# current standing-wave ratio

## Definitions

### Electronics

- For a given transmission line, such as a coaxial cable or
__waveguide__, the ratio of the maximum current to the minimum current. 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__reaches the__load__, such as an__antenna__. Its abbreviation is CSWR. Also called standing wave ratio (2). - acronymCSWR