Direct amplitude optimization and quantization for ultralow sidelobe phased arrays

In this paper, a new amplitude quantization synthesis method for ultralow sidelobe phased arrays is proposed. This method is based on the constrained nonlinear optimization algorithm. By introducing a set of critical constraint conditions into the optimization model, we can directly quantize the amplitude distribution of an array instead of replacing it with a continuous equivalent aperture antenna. The mutual coupling and the element patterns are also considered in the quantization synthesis. Finally two array simulation results are given to show the effectiveness of this method.