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Wideband phased array radiator

Raytheon has developed a novel wide-band, dual-polarized, element with excellent cross-polarization isolation to populate the AMRFC high band transmit array. The electrically short crossed notch (ESCN) element consists of an orthogonal pair of tapered crossed-notch radiators with a balanced feed to increase polarization purity. The ECSN provides excellent polarization performance vs. scan (better than current notch capabilities). The measured co-pol and x-pol performance of the embedded element in the E-, H-, and diagonal planes and the swept gain performance will be discussed. Also discussed will be the modeling techniques used to design this wideband radiator.