Implementation scheme of a wide band dual polarized antenna array

A design and implementation scheme of dual polarized antenna array with band width is proposed in this paper. The dual polarized Vivaldi antennas were designed and fabricated to form a linear antenna array with eight elements. The designed dual polarized Vivaldi antenna element consists of two uniform conventional planar Vivaldi antennas which are orthogonally assembled. The design parameters of the dual polarized Vivaldi antenna elements were determined by numerical simulations over the frequency range of 3 GHz to 11 GHz. The fabricated dual polarized Vivaldi antenna array was measured in the anechoic chamber and the experimental results are provided. The measured isolation degree between two polarization ports is about 20 dB and the gain of each polarization port for each antenna element is larger than 0.5 dBi. Several measured patterns are also given, which reveal the proposed implementation scheme of dual polarization antenna array is feasible.