Electromagnetic absorbers are of great value . the effect of em wave incidence on the surface of multilayer medium is studied . ga is used to optimize the parameters of the medium and the combination mode of different ferrite absorbers 文中对多层双复介质对垂直入射平面波的反射情况做了理论分析，采用遗传算法优化设计分层媒质的参数以及不同铁氧体吸波材料的组合方式，得出了几种较好的设计方案。
