Research progress in broadband absorber based on artificial electromagnetic medium

Abstract

Artificial electromagnetic medium can effectively expand the absorption bandwidth of the absorber,which has aroused wide attention of researchers at home and abroad. The main typical structure and application of broadband absorbers based on artificial electromagnetic medium were reviewed in recent years. The mechanism of artificial electromagnetic medium structure in improving the absorption rate of the absorber was analyzed. The theoretical model of widening the bandwidth of the absorber based on lumped elements was introduced. The important role of artificial electromagnetic medium in expanding the absorbing bandwidth was emphasized. Finally, the application prospect of electromagnetic medium in the field of science and technology was prospected, and it was pointed out that the future development trend of broadband electromagnetic absorbers mainly focuses on coordinability, multi-physics coupling and low-cost production, especially the efficient large-area low-cost production process will become important for the future.

Keywords

• artificial electromagnetic medium
• absorber
• broadband
• lumped element