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Electromagnetic fields

Mobile communication, WLAN & Co. - Grid expansion - Household appliances & electric installations

Elektromagnetische Felder

Applications of high frequency fields

Numerous technologies use high frequency (HF) electromagnetic fields: Every day life cannot be imagined without broadcasting and television, cordless phones increase comfort when phoning indoors and in the garden, babies are monitored in their rooms using baby monitors, computers are linked to each other and to peripheral devices by using Wireless LAN (WLAN) and Bluetooth and recently ultrawideband (UWB) technologies, police and fire brigades use their own radio network for communication.

Smartphone with Bluetooth

Bluetooth, Wireless Local Area Networks (WLAN), and Ultrawideband (UWB)

Bluetooth, Wireless Local Area Networks (WLAN), and Ultrawideband (UWB) apply radio frequency radiation for wireless and mobile connection of various devices for telecommunication and data processing.

Baby monitors

Baby monitors

Baby monitors are electrical devices and produce low-frequency electric and magnetic fields in the 50 Hz range if they are powered by electricity from the socket. Radio-operated devices use high-frequency electromagnetic fields to transmit sounds. They use two different technologies to transfer noise from the nursery to parents and thus give them the opportunity to control their babies or toddlers from the distance: the electrical grid of the house or flat or a radio system. Today most of the baby monitors apply wireless communication.

Radiation protection aspects in full-body scanners

Especially at airports full-body scanners are increasingly used for security screening (passenger screening). The devices can detect and locate forbidden objects concealed under a person’s clothing. In contrast to metal detectors used extensively at passenger airports, the new devices also respond to non-metallic objects such as explosives.

Cordless landline telephones

Cordless telephones for house and garden transmit conversations between a base station connected to the telephone landline and a portable talk/listen device (handset) via radio. In Germany, now only devices that use the DECT standard (Digital Enhanced Cordless Telecommunications) devices may be operated.

Basic Principles

Security authorities and organisations operate a radio network of their own strictly separated from other radio networks.

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