Sensitivity to positioning errors in aperiodic arrays

A novel approach to the synthesis of linear aperiodic arrays has been recently introduced. The approach exploits fast algorithms (NUFFT) for the evaluation of the aperiodic array factor that restore the computation burden of the standard periodic case. In addition, a proper representation of the design parameters, allowing the enforcement of tight constraints on the minimum and maximum inter-element spacings enable an effective control of mutual coupling effects, overall array dimensions and sensitivity of the synthesized pattern against realization errors on the element positioning. This paper points out the computational efficiency of the approach and the role of the constraints on the sensitivity of the solution.