Skin temperature increase caused by a mobile phone: A methodological infrared camera study
- 1 June 2005
- journal article
- research article
- Published by Wiley in Bioelectromagnetics
- Vol. 26 (6), 510-519
- https://doi.org/10.1002/bem.20124
Abstract
Mobile phone users often complain about burning sensations or a heating of the ear region. The increase in temperature may be due to thermal insulation by the phone, heating of the mobile phone resulting from its electrical power dissipation, and radio frequency (RF) exposure. The main objective of this study was to use infrared (IR) camera techniques to find how much each of these factors contributes to the increase in skin temperature resulting from the use of one GSM 900 phone. One subject, a healthy male took part in the study. He was holding the phone in a normal position when the phone was switched off, when it was switched on but with the antenna replaced by a 50 Ω load to eliminate the RF exposure, and when it was transmitting RF fields. The output power could be fixed, and the minimal and the maximal power levels of the phone were used. The study was designed as a double blind experiment. The changes in temperature after 15 and 30 min of mobile phone use were calculated on the exposed side of the head relative to the unexposed side. The insulation and the electrical power dissipation lead to statistically significant rises in the skin temperature, while the RF exposure did not. Bioelectromagnetics 26:510–519, 2005.Keywords
This publication has 10 references indexed in Scilit:
- Subjective symptoms among mobile phone users—A consequence of absorption of radiofrequency fields?Bioelectromagnetics, 2003
- Electromagnetic fields, such as those from mobile phones, alter regional cerebral blood flow and sleep and waking EEGJournal of Sleep Research, 2002
- Power absorption and temperature elevations induced in the human head by a dual-band monopole-helix antenna phoneIEEE Transactions on Microwave Theory and Techniques, 2001
- Temperature rise for the human head for cellular telephones and for peak SARs prescribed in safety guidelinesIEEE Transactions on Microwave Theory and Techniques, 2001
- Mobile phone use and subjective symptoms. Comparison of symptoms experienced by users of analogue and digital mobile phonesOccupational Medicine, 2001
- Symptoms Experienced in Connection with Mobile Phone UseOccupational Medicine, 2000
- Experimental thermographic analysis of thermal effects induced on a human head exposed to 900-MHz fields of mobile phonesIEEE Transactions on Microwave Theory and Techniques, 2000
- Calculation of change in brain temperatures due to exposure to a mobile phonePhysics in Medicine & Biology, 1999
- FDTD computation of temperature rise in the human head for portable telephonesIEEE Transactions on Microwave Theory and Techniques, 1999
- Nerve Conduction Velocity and Mobile PhonesPublished by Springer Science and Business Media LLC ,1999