Biological effect of SAR on the human head due to variation of dielectric properties at 1800 and 2450 MHz with different antenna substrate materials

Research output: Contribution to journalArticle

Abstract

The aim of this study was to consider a possible discrepancy in electromagnetic (EM) absorption in the human head. The finite-difference time-domain (FDTD) method with the lossy Drude model was adopted in this study. Here, the permittivity and conductivity of all head tissues were increased from 10% to 20% except when not using the same exposure conditions. Recognizable mobile phone frequencies of 1800 and 2450 MHz were studied in this simulation. The increase of up to 20% in conductivity and permittivity and varied substrate material always caused an EM absorption variation of 32.59% for specific absorption rate (SAR) 1 g and 35.25% for SAR 10 g at 1800 MHz, and variation of 20.37% for SAR 1 g and 17.99% for SAR 10 g at 2450 MHz, respectively.

Original languageEnglish
Pages (from-to)411-415
Number of pages5
JournalScience and Engineering of Composite Materials
Volume22
Issue number4
DOIs
Publication statusPublished - 1 Jul 2015

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Electromagnetic wave absorption
Dielectric properties
Permittivity
Antennas
Finite difference time domain method
Substrates
Mobile phones
Tissue

Keywords

  • finite-difference time-domain (FDTD) method
  • ingestible wireless device (IWD)
  • radiation intensity
  • specific absorption rate (SAR)

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

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title = "Biological effect of SAR on the human head due to variation of dielectric properties at 1800 and 2450 MHz with different antenna substrate materials",
abstract = "The aim of this study was to consider a possible discrepancy in electromagnetic (EM) absorption in the human head. The finite-difference time-domain (FDTD) method with the lossy Drude model was adopted in this study. Here, the permittivity and conductivity of all head tissues were increased from 10{\%} to 20{\%} except when not using the same exposure conditions. Recognizable mobile phone frequencies of 1800 and 2450 MHz were studied in this simulation. The increase of up to 20{\%} in conductivity and permittivity and varied substrate material always caused an EM absorption variation of 32.59{\%} for specific absorption rate (SAR) 1 g and 35.25{\%} for SAR 10 g at 1800 MHz, and variation of 20.37{\%} for SAR 1 g and 17.99{\%} for SAR 10 g at 2450 MHz, respectively.",
keywords = "finite-difference time-domain (FDTD) method, ingestible wireless device (IWD), radiation intensity, specific absorption rate (SAR)",
author = "Faruque, {Mohammad Rashed Iqbal} and Islam, {Mohammad Tariqul} and Ullah, {Mohammad Habib}",
year = "2015",
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T1 - Biological effect of SAR on the human head due to variation of dielectric properties at 1800 and 2450 MHz with different antenna substrate materials

AU - Faruque, Mohammad Rashed Iqbal

AU - Islam, Mohammad Tariqul

AU - Ullah, Mohammad Habib

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N2 - The aim of this study was to consider a possible discrepancy in electromagnetic (EM) absorption in the human head. The finite-difference time-domain (FDTD) method with the lossy Drude model was adopted in this study. Here, the permittivity and conductivity of all head tissues were increased from 10% to 20% except when not using the same exposure conditions. Recognizable mobile phone frequencies of 1800 and 2450 MHz were studied in this simulation. The increase of up to 20% in conductivity and permittivity and varied substrate material always caused an EM absorption variation of 32.59% for specific absorption rate (SAR) 1 g and 35.25% for SAR 10 g at 1800 MHz, and variation of 20.37% for SAR 1 g and 17.99% for SAR 10 g at 2450 MHz, respectively.

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