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

We present a deterministic iterative method for synthesizing equal-amplitude aperiodic array radiating patterns with arbitrary upper bounds and are capable of scanning in a wide angular range without violating the sidelobe 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 nonuniform 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.

Automated summary

This research proposes a method for synthesizing equal-amplitude aperiodic array radiating patterns, capable of scanning in a wide angular range while maintaining the sidelobe level constraint. By iteratively adjusting the sources, the excitation dynamic of the starting layout can be reduced. The method is flexible and exhibits excellent performance in numerical simulations.