Design and analysis of a SRR superstrate for SAR reduction

S. Imaculate Rosaline and S. Raghavan

Journal of Electromagnetic Waves and Applications, 2015, vol. 29, issue 17, 2330-2338

Abstract: This paper focuses on the design and analysis of a split-ring resonator (SRR) superstrate for a patch antenna, operating in the 1.75 GHz band, in view of reducing the specific absorption rate (SAR). The power radiation from the antenna with and without the superstrate is discussed. Transmission spectra of the SRR are retrieved using the classic waveguide theory approach. Higher order stop band of the superstrate around 1.75 GHz is responsible for the reduction in the electromagnetic absorption. SAR is measured for various layers of the human head such as skin, fat, bone, dura, CSF and brain individually. It is inferred that the superstrate is capable of obtaining at most 86% of SAR10g reduction with promising antenna performances. The conventional patch antenna along with the SRR superstrate is fabricated and measured to validate the simulation results.

Date: 2015
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DOI: 10.1080/09205071.2015.1091384

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