The effects of frequency, polarization, direction and metallic objects on the SAR values in a human head model for plane wave exposure (500-2500 MHZ)

Tanju Yelkenci*, Selcuk Paker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

This paper presents the effects of different radiation characteristics on the Specific Absorption Rate (SAR) values induced within a 2mm resolution, anatomically detailed, realistic model of human head by including a metallic spectacle frame and metallic tooth caps. The head is illuminated by a plane wave source with seven different frequencies from 500MHz to 2500MHz, with five different incident directions and three polarizations. The electromagnetic (EM) fields are computed using the Finite-Difference-Time-Domain (FDTD) method. The calculated local SAR values are averaged over 1g and 10g tissues as proposed by IEEE standards. It is shown that, the existence of a metallic spectacle frame causes an increase in the SAR values. However, the results indicate that, metallic tooth caps have negligible influence on the SAR values.

Original languageEnglish
Pages (from-to)215-219
Number of pages5
JournalFrequenz
Volume60
Issue number11-12
DOIs
Publication statusPublished - 2006

Keywords

  • Electromagnetic radiation
  • Finite difference time domain (FDTD) method
  • RF exposure
  • Specific absorption rate (SAR)

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