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Bandwidth enhancement of wire-based metamaterial absorber using dielectric cap
A. Bhati, , V. Dixit
Published in Institute of Electrical and Electronics Engineers Inc.
Volume: 2017-January
Pages: 279 - 282
In this article, a wire based metamaterial absorber is capped with dielectric absorber to achieve bandwidth enhancement. The unit cell of the designed absorber consists of copper wires, placed on the metal back FR4 sheet and dielectric absorber is located on the top of wire elements. The simulated return loss shows two resonant modes, one due to the dielectric absorber and other due to wire based metamaterial absorber. By optimizing the design parameters, the resonant peaks are tailored to achieve a bandwidth of more than 6 GHz for 10 dB return loss in TE polarization. The electric field and power loss densities are plotted to present the origin of the absorption peaks. © 2017 IEEE.