Optimised design of Jaumann radar absorbing materials using a genetic algorithm

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Abstract
The design of wideband, multilayer radar absorbing materials involves the solution of an N-dimensional optimisation problem. Genetic algorithms appear to offer significant advantages over conventional optimisation techniques for this type of problem owing to their robustness and independence of performance function derivatives. To illustrate their use, the paper considers two problems: first the optimum design of wideband, multilayer, passive Jaumann radar absorbers with or without an outer high-permittivity skin; and secondly, an examination of the potential of such absorbers when configured as active i.e. frequency agile, dynamic structures.