MICROWAVE ABSORPTION PROPERTIES OF M TYPE HEXAGONAL FERRITE AND SIC BASED ABSORBING PAINT AT KU BAND

摘要

In this paper the experimental result of microwave absorber with a single layer coating of ferrite-sic based paint for Ku band is presented. Samples of M type hexagonal ferrite powder [Ba(MnTi)_(1.8)Fe_(8.4)O_(19)] has been developed by dry attrition and sintering process[1]. These developed ferrite powder and SIC powder have been mixed in epoxy resins to form a microwave absorbing paint. This paint was coated on aluminum sheet for absorption studies. The microwave absorption characteristics are given for Ku band. It is found that by mixing of silicon carbide powder in to ferrite powder improve the overall absorption characteristics and gives broad band characteristics with minimum absorption of 8 dB from 15.8 to 18 GHz range for a coating thickness of 1 mm.