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A 4-element ultra-wideband dual-polarized array is presented in this paper. Tapered slot antennas are chosen as the array elements. The array is arranged in a #-shaped form, which is capable of avoiding high-level grating lobe and obtained better than 35dB port-isolation in the desired working band. A prototype of the array is fabricated. Measured results show that the VSWR ⩽ 2.5 bandwidth ranges...
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