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SAR / Device Absorption

Assessment of specific energy absorption rate (SAR) in the head from a TETRA handset.

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Dimbylow P, Khalid M, Mann S. · 2003

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FDTD calculations showed a TETRA handset with a helical antenna at 3 W exceeds the ICNIRP public exposure restriction by up to 50% when held at the maximum SAR position for 6 minutes.

Plain English Summary

Summary written for general audiences

Researchers performed FDTD calculations of SAR from a representative TETRA handset in an anatomically realistic head model. The handset operating at 1 W in normal use complied with both ICNIRP occupational and public exposure restrictions. The handset with a monopole antenna operating at 3 W in normal use also complied with both ICNIRP occupational and public exposure restrictions. The handset with a helical antenna at 3 W complied with the occupational restriction but exceeded the public restriction by up to 50% if held at the maximum SAR position for 6 minutes continuously. Calculations covered handset positions in front of the face and at both sides of the head.

Why This Matters

TETRA is a modern digital private mobile radio system designed for professional users such as police and fire brigades. The study used a representative TETRA handset for the calculations.

Exposure Information

Specific exposure levels were not quantified in this study. Duration: 6 min continuously.

Study Details

Finite-difference time-domain (FDTD) calculations of the specific energy absorption rate (SAR) from a representative TETRA handset have been performed in an anatomically realistic model of the head.

TETRA (Terrestrial Trunked Radio) is a modern digital private mobile radio system designed to meet t...

operating at 1 W in normal use, will show compliance with both the ICNIRP occupational and public ex...

Cite This Study
Dimbylow P, Khalid M, Mann S. (2003). Assessment of specific energy absorption rate (SAR) in the head from a TETRA handset. Phys Med Biol. 48(23):3911-26, 2003.
Show BibTeX
@article{p_2003_assessment_of_specific_energy_2033,
  author = {Dimbylow P and Khalid M and Mann S.},
  title = {Assessment of specific energy absorption rate (SAR) in the head from a TETRA handset.},
  year = {2003},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/14703166/},
}
PubMed: 14703166

Cited By (23 papers)

Quick Questions About This Study

FDTD calculations were performed in an anatomically realistic model of the head.
The monopole antenna at 3 W complied with both ICNIRP occupational and public exposure restrictions.
The helical antenna at 3 W complied with the occupational restriction but exceeded the public restriction by up to 50% if held at the maximum SAR position for 6 minutes continuously.
TETRA uses 380-385 MHz and 390-395 MHz for the public sector network in the UK.
Calculations were performed for positions in front of the face and at both sides of the head.