Isophoric Inflating Deflating Exploration Algorithm (I-IDEA) for Equal-Amplitude Aperiodic Arrays

We present a deterministic iterative method for synthesizing equal-amplitude aperiodic arrays radiating patterns with arbitrary upper bounds and capable of scanning in a wide angular range without violating the side-lobe level constraint. The approach employs the principle of “inflating” and “deflating” the sources to reduce the excitation dynamic of a starting layout iteratively. The proposed approach is flexible since it can start from a regular grid array with variable excitation amplitudes, or from a non-uniform aperiodic layout generated with any other synthesis algorithm. Several numerical simulations comparing the proposed approach to some of the algorithms available in the open literature demonstrate the excellent performance of the approach. IEEE