Due to a lack of financial resources, we unfortunately have to suspend the import of any new radio frequency and mobile phone-related articles as of now (November 27, 2017). We apologize for this inconvenience and will keep you informed.

Because we received a large number of inquiries, we set up a bank account to accept donations. With their aid, we hope to resume, at least partly, the import of newly published articles to the RF archive of the EMF-Portal. Any contribution is greatly appreciated. Thank you for your kind support!

DONATION ACCOUNT: Uniklinik RWTH Aachen, IBAN: DE27 3905 0000 0013 0040 15, BIC: AACSDE33, Reference: GB-FM/380454/Arbm


Man-made intermediate frequency fields

Due to innovations and enhanced applications of power electronics the intermediate frequency range is of increasing importance on human exposure in everyday life. Typical exposure sources are induction hobs, electronic article surveillance systems, and near-field communication devices or wireless charging or converter systems, such as used in electric vehicles. Additionally, there are many different applications in medicine (e.g. MRI, nerve stimulators, electrosurgical devices) or in industry (e.g. inductive heating devices).
Left: amateur radio antenna at the TU Braunschweig, right: inductive heating of a work piece
left photo: photo: Jens Schüür, DG6XU, license: CC BY-SA 3.0), right photo: Viperch~commonswiki/Plustherm Point GmbH, license: CC BY-SA 3.0, both via Wikimedia Commons