Fast Co-polar and Cross-Polar 3D Pattern Synthesis with Dynamic Range Ratio Reduction for Conformal Antenna Arrays

This paper presents a fast method for conformal antenna arrays that enables the synthesis of 3D co-polar and crosspolar patterns, simultaneously reducing the dynamic range ratio (DRR) of the array excitations. The power synthesis problem is reduced to a field synthesis one by introducing two auxiliary phase patterns: one for the co-polar pattern and the other for the crosspolar pattern. The problem is then iteratively solved with respect to the two auxiliary phase patterns and to the array excitations. A modified version of the method is also proposed, for the particular case where the DRR reduction is not required, obtaining a further strong reduction of the computational time.