Shape synthesis based on exact reanalysis

A topology optimization technique based on a mesh element perturbation scheme is proposed within method-of-moments formalism. The procedure is based on an inversion-free evaluation of topological sensitivities, constituting a gradient-based local step that is iteratively restarted by the genetic algorithm. The developed algorithm is compared to the existing algorithm, implemented in Antenna Toolbox for MATLAB, based on a single basis function removal. The method’s validity and effectiveness are demonstrated in a variety of examples. The developed method is also compared to the known realizations based on the adjoint formulation of topology optimization. The viability of the proposed optimization procedure is also demonstrated by manufacturing two obtained designs.