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Raytheon's re-engineered Patriot radar prototype uses two key technologies - active electronically scanned array, which changes the way the radar searches the sky; and gallium nitride circuitry, which uses energy efficiently to amplify the radar's high-power radio frequencies (PRNewsFoto/Raytheon Company)

Raytheon's re-engineered Patriot radar prototype uses two key technologies - active electronically scanned array, which changes the way the radar searches the sky; and gallium nitride circuitry, which uses energy efficiently to amplify the radar's high-power radio frequencies (PRNewsFoto/Raytheon Company)

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