The Billboard antenna reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Billboard antenna

In telecommunications, a billboard antenna is an array of parallel dipole antennas with flat reflectors, usually positioned in a line or plane. The spacing and dimensions of the dipoles depend on the wavelength. The main lobe of a fixed billboard antenna may, within limits, be steered by appropriate phasing of the respective signals to individual elements of the array. Synonym broadside antenna.

Source: from Federal Standard 1037C

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