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Phased array
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=== Active phased array === [[Active electronically scanned array|Active electronically-scanned array]]s (AESA) elements incorporate transmit amplification with [[phase shift]] in each [[Transceiver|antenna element]] (or group of elements). Each element also includes receive pre-amplification. The phase shifter setting is the same for transmit and receive.<ref>Active Electronically Steered Arrays{{Snd}} A Maturing Technology (ausairpower.net)</ref> Active phased arrays do not require phase reset after the end of the transmit pulse, which is compatible with [[Doppler radar]] and [[pulse-Doppler radar]].
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