phased array

a radar antenna consisting of an array of dipoles that are excited in or out of phase with each other to control beam direction and radiation pattern without moving the antenna. Compare dipole ( def 3 ).

1930–35 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
phased array
an array of radio antennae connected together to form a single antenna. The beam produced can be steered across the sky by adjusting the phases of the signals. The absence of moving parts enables the beams to be steered very rapidly, making it useful in radar

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
He discussed dual polarized radar and phased array radar.
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