Measurement of low frequency magnetic fields from digital cellular telephones

Journal Article · Thu May 01 00:00:00 EDT 1997 · Bioelectromagnetics

DOI:https://doi.org/10.1002/(SICI)1521-186X(1997)18:2<184::AID-BEM12>3.3.CO;2-#· OSTI ID:462588

Linde, T; Mild, K H ^[1]

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1. National Inst. for Working Life, Umeaa (Sweden)

All previous discussions about possible health effects in connection with the use of digital cellular telephones have been focused on the microwaves. However, the pulsed transmitting mode causes pulsed currents in the phone and the battery pack, which give rise to concomitant magnetic fields. Digital cellular telephones using the GSM (Global System for Mobile Communication) transmit information in bursts of microwaves. This pulsed transmitting mode causes the battery current and currents in the electronics of the apparatus to be pulsed. These pulsed currents produce corresponding pulsed magnetic fields near the phones. A study to determine the magnitude of these fields involved two models of digital telephones. The highest value of the magnetic flux density was 1.8 {micro}T (rms).

• OSTI ID: 462588
• Journal Information: Bioelectromagnetics, Vol. 18, Issue 2; Other Information: PBD: 1997
• Country of Publication: United States
• Language: English

Related Subjects

56 BIOLOGY AND MEDICINE
APPLIED STUDIES
MAGNETIC FIELDS
TELEPHONES
BIOLOGICAL EFFECTS
MAN
EXPERIMENTAL DATA