Electromagnetic (EM) absorption rate reduction of helix antenna with shielding material for mobile phone application

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This paper proposes the reduction of specific absorption rate (SAR) with shielding material is performed by the finite-difference time-domain method (FDTD) with lossy-Drude model by CST Microwave Studio. We propose SAR evaluation and reduction methods based on power conservation. It has been shown that even though the use of shielding (ferrite) material not only reduces the SAR in the human head but also the radiated power, it reduces the SAR in head more considerably than the radiated power. Shielding materials have achieved a 58.68% reduction of the initial SAR value for the case of 1 gm SAR. These results suggest a guideline to choose various types of materials with the maximum SAR reducing effect for a phone model.

Original languageEnglish
Pages (from-to)120-133
Number of pages14
JournalAustralian Journal of Basic and Applied Sciences
Volume5
Issue number3
Publication statusPublished - Mar 2011

Fingerprint

Electromagnetic wave absorption
Mobile phones
Shielding
Antennas
Finite difference time domain method
Studios
Ferrite
Conservation
Microwaves

Keywords

  • Antenna
  • FDTD method
  • Human head model
  • SAR
  • Shielding materials

ASJC Scopus subject areas

  • General

Cite this

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abstract = "This paper proposes the reduction of specific absorption rate (SAR) with shielding material is performed by the finite-difference time-domain method (FDTD) with lossy-Drude model by CST Microwave Studio. We propose SAR evaluation and reduction methods based on power conservation. It has been shown that even though the use of shielding (ferrite) material not only reduces the SAR in the human head but also the radiated power, it reduces the SAR in head more considerably than the radiated power. Shielding materials have achieved a 58.68{\%} reduction of the initial SAR value for the case of 1 gm SAR. These results suggest a guideline to choose various types of materials with the maximum SAR reducing effect for a phone model.",
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AB - This paper proposes the reduction of specific absorption rate (SAR) with shielding material is performed by the finite-difference time-domain method (FDTD) with lossy-Drude model by CST Microwave Studio. We propose SAR evaluation and reduction methods based on power conservation. It has been shown that even though the use of shielding (ferrite) material not only reduces the SAR in the human head but also the radiated power, it reduces the SAR in head more considerably than the radiated power. Shielding materials have achieved a 58.68% reduction of the initial SAR value for the case of 1 gm SAR. These results suggest a guideline to choose various types of materials with the maximum SAR reducing effect for a phone model.

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