In telecommunication, a ground plane is an electrically conductive surface that serves as the near-field reflection point for an antenna, or as a reference ground in a circuit.

A ground plane may consist of a natural (e.g., Earth or sea) surface, an artificial surface of opportunity (e.g., the roof of a motor vehicle), or a specially designed artificial surface (e.g., the disc of a discone antenna).

Source: from Federal Standard 1037C in support of MIL-STD-188

External links

• what is a ground plane? (http://groups.google.com/groups?selm=1992Aug12.000207.20082%40u.washington.edu)