Abstract：A barium ferrite microwave absorbing coating based on metamaterial structure was designed. The influence of metamaterial structure on the absorbing properties of this coating was analyzed, and the absorbing mechanism of coating was studied and discussed. Through simulation, it is found that the absorbing properties of barium ferrite have been greatly enhanced with metamaterial structure. The optimum value of the coating thickness(2.5mm) and sheet resistance(70Ω/□) are unique, meanwhile, the widest absorbing bandwidth of the coating is achieved. There exist two absorption peaks and the reflection loss can reach -10dB within the frequency range of 8-18GHz. The results show that the absorbing properties of barium ferrite are improved immensely with metamaterial structure design.
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