An antenna (100) comprising a first antenna array (101) having a first polarization, a second antenna array (103) having a second polarization different from the first polarization and orthogonal thereto. A quadrature hybrid (105) for transforming the polarizations of the first and second antenna arrays to third and fourth different polarizations that are orthogonal to each other and are different from the first and second polarizations. The third and fourth polarizations comprise +45 degree polarization and -45 degree polarization.
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