Oblique incidence performance of microwave absorbers based on magnetic polymer composites

Recently, there has been an increasing interest in the application of magnetic materials for radar absorbing materials design. Many studies have been carried out to obtain magnetic composite material with high and matching permeability and permittivity, because absorbers based on such materials can provide a specified level of RCS reduction and a broad bandwidth with smaller thick-ness. Many magnetic absorbers (MAs) with promising oblique incidence performance at the desired frequency are based on high permeability and permittivity. However, there is a lack of basic mechanisms about oblique incidence performance for MAs based on electromagnetic (EM) parameters.