Study on the characteristics of a V-shaped metamaterial absorber and its application

Abstract

This paper proposed a V-shaped metamaterial absorber to enrich the structure of the absorber and improve its absorbing efficiency. The structure is to print an inclined V-shaped copper-plated layer on the FR4 substrate and arrange them periodically. The absorber has two large absorption peaks, and the bandwidth with an absorption rate of more than 90% is 1.3 GHz. The origin of absorption mainly comes from reflection cancellation, followed by dielectric loss. The basic type of V-shaped absorber has excellent promotion space and application prospects. It can further optimize and expand the performance of absorber through three main forms: unit nesting, multi-unit array and multi-layer stacking. Based on the structure of unit nesting combination, the processing of experimental samples and the measurement of electromagnetic parameters were completed. The experimental results are in good agreement with the simulation results.