Design of broadband, thin-layer radar absorbing materials using genetic algorithms

The optimized method to synthesize the multi-layered radar absorbing materials with a maximum bandwidth satisfied by a special value of reflection loss to electromagnetic wave in a given range of thickness is established using the simple genetic algorithms, into which both dynamically tracing variable restricting conditions and dynamically extending the coding length are incorporated for the first time. The thin multi-layered microwave absorbing coatings with a broad bandwidth over a given range of frequencies are obtained based on the database of electromagnetic parameters for the absorbers prepared in our lab. The optimized design method can be extended to synthesize thin-layered, lightweight, broadband and strong-absorbing radar absorbing materials.