Design of a Compact Fractal Unit Cell Absorber for the 2.45 GHz Band

Akaa Agbaeze Eteng, Department of Electrical/Electronic Engineering, Faculty of Engineering, University of Port Harcourt, Port Harcourt, Nigeria
2021 International Journal of Wireless and Microwave Technologies  
This paper presents the design of a fractal unit cell absorber for electromagnetic energy absorption in the 2.45 GHz band. The configuration is based on a second-order Minkowski-inspired fractal geometry, through which a compact structure is realized. The proposed design is achieved using full-wave electromagnetic simulations and the study of an equivalent circuit model. At 2.45 GHz, the synthesized structure achieves a near-perfect absorptivity of 99%, with a modest footprint of 0.11λ. The
more » ... t of 0.11λ. The realized structure can serve as a constituent element for the design of absorber arrays to mitigate multipath effects and prevent eavesdropping attacks in indoor wireless environments.
doi:10.5815/ijwmt.2021.01.02 fatcat:fnqgj2rghvbfrf2qruaajotsci