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ground-plane antenna meaning

  • [Electronics]
    A vertical radiator operated against a system of quarter-wave radials, elevated at least a quarter wavelength above the earth’s surface and fed with coaxial cable. The center conductor of the cable is connected to the base of the radiator, and the shield is connected to three or four quarter-wave radials that run outward from the base of the radiator. At shorter wavelengths, a disk or cone can replace the radials. The chief advantages of this antenna are simplicity and high efficiency. The main problem is susceptibility to human-made electromagnetic noise. See also RADIAL, 1. Compare GROUND-MOUNTED VERTICAL ANTENNA.




    ground plate A metal plate buried in the earth to
    provide a low-resistance ground connection.

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