Abstract:

A pattern synthesis method for large planar two-dimensional arrays is proposed. Firstly, starting with an initial set of element excitations, the array pattern is calculated by using two-dimensional invert fast Fourier transform (IFFT). Secondly, after matching the array pattern to the desired pattern, a new set of excitations is obtained through twodimensional fast Fourier transform (FFT) performed on the matched array pattern. Repeat the whole process until the array pattern satisfies the pattern requirements. This method directly optimizes the large planar two-dimensional array rather than linear and small planar arrays, and the size of the large planar array exceeds 5 000. Finally, the results of two 6 400-element (80×80) planar arrays are presented to demonstrate the high efficiency and practicality of the method.