Reduction of specific absorption rate (SAR) in the human head with ferrite material and metamaterial

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Abstract

The electromagnetic interface between the antenna and the human head is reduced with ferrite materials and metamaterials. The reduction of Specific Absorption Rate (SAR) with materials and metamaterials is performed by the finite-difference time-domain method with Lossy-Drude model by CST Microwave Studio. The metamaterials can be achieved by arranging split ring resonators (SRRs) periodically. The SAR value has been observed by varying the distances between head model to phone model, different widths, different thicknesses, and different heights of materials and metamaterial design. Materials have achieved 47.68% reduction of the initial SAR value while metamaterials achieved a reduction of 42.12%. These results can endow with supportive information in designing the wireless communications equipments for safety compliance.

Original languageEnglish
Pages (from-to)47-58
Number of pages12
JournalProgress In Electromagnetics Research C
Volume9
DOIs
Publication statusPublished - 1 Jan 2009

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Metamaterials
Ferrite
Finite difference time domain method
Studios
Resonators
Microwaves
Antennas
Communication

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

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