The design of a double layer microwave absorber based on studying microwave absorbing characteristics

The design of a double-layer absorber consisting of silicon carbide (SiC) and molecular sieves layer has been performed. The microwave absorbing characteristics of an individual-layer molecular sieves and proposed double-layer absorber are investigated by simultaneously considering the effects of various moisture contents and absorber dimension. The results indicate that the microwave absorbing capabilities of double-layer absorber are much better than single-layer absorber and the range of optimal thicknesses with reflection loss less than -10dB are effectively broadened based SiC ceramic auxiliary absorption.