Hybrid multilayer structures for use as microwave absorbing material

The aim of this study is the in situ processing of flexible multilayer radar absorbing structures materials based on polymeric substrates impregnated with polyaniline conducting polymer. There is a growing interest in the development of low density flexible absorber material for applications that require the reduction of the reflectivity of targets with complex shapes and improvement of the ease of transportation of targets. Processed materials having different characteristics were evaluated for the attenuation in the X-band frequency. The results show how the characteristics of the impregnated layers influence the absorbing properties. The anchorage of absorbing centers on the substrate was evaluated and the different structures that were obtained attenuated the incident radiation from 65 to 99%, which indicates that these materials can be used as microwave absorbers.