An eigen space approach for the synthesis of circular arrays

An eigen space non-iterative technique for the synthesis of both linear and circular arrays is examined. The technique is applicable in the case of equi-spaced linear arrays with equal phase and symmetric excitation coefficients and circular arrays with quadrant symmetry, with the number of elements divisible by 4. The technique is based on formulating the synthesis process as a least-squared optimization problem. Some design examples are presented to illustrate the potential and the quality of the considered technique.