Characterization and Modeling of Microwave Absorbers in the RF and Antenna Projects

Abstract

Some practical problems concerning the characterization and modeling of microwave absorbers are discussed in this paper. First, a number of measurement methods are considered for determination of the relative and absolute absorbing ability of the most popular absorbing materials – foams, rubber sheets, coatings and thin films. Next, several more complicated methods for characterization of the complex dielectric parameters of the absorbers are presented and discussed. Finally, examples for modeling of microwave absorbers by 3D simulators are given.

Keywords

• absorbing media
• permeability measurement
• permittivity measurement