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Reflective array antenna
In telecommunications and radar, a reflective array antenna is a class of directive antennas in which multiple driven elements are mounted in front of a flat surface designed to reflect the radio waves in a desired direction. They are often used in the VHF and UHF frequency bands. VHF examples are generally large and resemble a highway billboard, so they are sometimes called billboard antennas or broadside antennas. The curtain array is a larger version used by shortwave radio stations. Other names are bedspread array and bowtie array depending on the type of elements making up the antenna.

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