Design of Nonuniformly Spaced Antenna Arrays Using Orthogonal Coefficients Equating Method

. Orthogonal Coefficients Equating (OCE) method as an analytic method is proposed to synthesize nonuniformly spaced antenna arrays to have array factors nearly equal to that of a previously designed uniformly spaced antenna arrays. In this method, the orthogonal coefficients of array factors of nonuniformly spaced array are equated to those of uniformly spaced array. To this end, three orthogonal functions including Chebyshev polynomials, Legendre polynomials and exponential functions are dis-cussed. Some examples are brought to verify the perfor-mance of the OCE method for all three orthogonal functions.