Fast Linear Array Synthesis Including Coupling Effects Utilizing Iterative FFT via Least-Squares Active Element Pattern Expansion

A novel method incorporating the least-squares active element pattern expansion (LS-AEPE) into the iterative Fourier transform (IFT) procedure is presented to efficiently synthesize linear arrays including mutual coupling and platform effects. The proposed method has better pattern synthesis accuracy than the original IFT, and is much faster than the combination of LS-AEPE and the genetic algorithm. Numerical examples are given for synthesizing the patterns of two microstrip antenna arrays mounted on inhomogeneous platforms. Synthesis results show the effectiveness and advantages of the proposed method.