Frequency-invariant pattern synthesis for conformal array with space-time-polarization weighting

Wideband and multi-polarizations is the development trend of the conformal array antenna. Due to the variable curvature of the platform, one of the most serious challenges faced in the pattern synthesis of conformal array antenna is the serious cross-polarization. Based on element polarization diversity, a space-time-polarization weighting construct is proposed for frequency-invariant, low cross-polarization and low sidelobe pattern synthesis of conformal array antenna. The optimal weight vector is obtained by alternating projection method. Simulation results of the circular cylindrical array are provided to demonstrate the effectiveness and behavior of the proposed method.