Effects of substrate material and dielectric properties on electromagnetic energy absorption over gsm bands

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2 Citations (Scopus)

Abstract

This paper analyzes the effects of electromagnetic (EM) absorption towards human head with variations of human head dielectric properties. The human head exposed to 900, 1800 and 1900 MHz operational frequencies. Specific absorption rate (SAR) was the parameter used to measure the interactions of EM waves towards human head. The mobile phone attached with helical antenna together with human head simulated through finite-difference time-domain (FDTD) method using Computer Simulated Technology (CST) Microwave Studio. The human head dielectric properties were varied with increment and decrement of 10 % and 20 % of each of the properties. Through this study, it was found out that conductivity was directly proportional to SAR values while permittivity was inversely proportional with SAR values. In all frequency exposures, helical antenna with substrate of FR4 resulted in the highest SAR values. It was found that, helical antenna with substrate of Rogers RO3006 (loss free) had contributed the lowest SAR values in all operational frequencies exposed.

Original languageEnglish
Pages (from-to)151-156
Number of pages6
JournalJournal of Emerging Technologies in Web Intelligence
Volume5
Issue number2
DOIs
Publication statusPublished - May 2013

Fingerprint

Helical antennas
Energy absorption
Electromagnetic waves
Dielectric properties
Materials properties
Substrates
Electromagnetic wave absorption
Finite difference time domain method
Studios
Mobile phones
Permittivity
Microwaves

Keywords

  • Different substrate material
  • Finite-Difference Time-Domain (FDTD) method
  • Ingestible Wireless Device (IWD)
  • Specific Absorption Rate (SAR)

ASJC Scopus subject areas

  • Computer Networks and Communications

Cite this

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title = "Effects of substrate material and dielectric properties on electromagnetic energy absorption over gsm bands",
abstract = "This paper analyzes the effects of electromagnetic (EM) absorption towards human head with variations of human head dielectric properties. The human head exposed to 900, 1800 and 1900 MHz operational frequencies. Specific absorption rate (SAR) was the parameter used to measure the interactions of EM waves towards human head. The mobile phone attached with helical antenna together with human head simulated through finite-difference time-domain (FDTD) method using Computer Simulated Technology (CST) Microwave Studio. The human head dielectric properties were varied with increment and decrement of 10 {\%} and 20 {\%} of each of the properties. Through this study, it was found out that conductivity was directly proportional to SAR values while permittivity was inversely proportional with SAR values. In all frequency exposures, helical antenna with substrate of FR4 resulted in the highest SAR values. It was found that, helical antenna with substrate of Rogers RO3006 (loss free) had contributed the lowest SAR values in all operational frequencies exposed.",
keywords = "Different substrate material, Finite-Difference Time-Domain (FDTD) method, Ingestible Wireless Device (IWD), Specific Absorption Rate (SAR)",
author = "Husni, {Nur Aisyah} and Faruque, {Mohammad Rashed Iqbal} and Islam, {Mohammad Tariqul} and Norbahiah Misran",
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AU - Husni, Nur Aisyah

AU - Faruque, Mohammad Rashed Iqbal

AU - Islam, Mohammad Tariqul

AU - Misran, Norbahiah

PY - 2013/5

Y1 - 2013/5

N2 - This paper analyzes the effects of electromagnetic (EM) absorption towards human head with variations of human head dielectric properties. The human head exposed to 900, 1800 and 1900 MHz operational frequencies. Specific absorption rate (SAR) was the parameter used to measure the interactions of EM waves towards human head. The mobile phone attached with helical antenna together with human head simulated through finite-difference time-domain (FDTD) method using Computer Simulated Technology (CST) Microwave Studio. The human head dielectric properties were varied with increment and decrement of 10 % and 20 % of each of the properties. Through this study, it was found out that conductivity was directly proportional to SAR values while permittivity was inversely proportional with SAR values. In all frequency exposures, helical antenna with substrate of FR4 resulted in the highest SAR values. It was found that, helical antenna with substrate of Rogers RO3006 (loss free) had contributed the lowest SAR values in all operational frequencies exposed.

AB - This paper analyzes the effects of electromagnetic (EM) absorption towards human head with variations of human head dielectric properties. The human head exposed to 900, 1800 and 1900 MHz operational frequencies. Specific absorption rate (SAR) was the parameter used to measure the interactions of EM waves towards human head. The mobile phone attached with helical antenna together with human head simulated through finite-difference time-domain (FDTD) method using Computer Simulated Technology (CST) Microwave Studio. The human head dielectric properties were varied with increment and decrement of 10 % and 20 % of each of the properties. Through this study, it was found out that conductivity was directly proportional to SAR values while permittivity was inversely proportional with SAR values. In all frequency exposures, helical antenna with substrate of FR4 resulted in the highest SAR values. It was found that, helical antenna with substrate of Rogers RO3006 (loss free) had contributed the lowest SAR values in all operational frequencies exposed.

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KW - Ingestible Wireless Device (IWD)

KW - Specific Absorption Rate (SAR)

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