Antenna for emission and / or reception of electromagnetic waves and application thereof

摘要

"ANTENNA OF EMISSION AND / OR RECEPTION OF ELECTROMAGNETIC WAVES AND APPLICATION OF THE SAME". Antenna for emission and / or reception of electromagnetic waves (10) of the type comprising a wire arranged in a spiral in a plane, said spiral having at least two turns; said antenna being characterized by the fact that it comprises at least one cut (12) in order to decrease the inter-spiral capacity. Such an antenna is used in a non-contact communication system in which a reader transmits electromagnetic signals to a portable object (card or ticket) in order to be able to identify the owner of the portable object when the latter transmits identification signals to the user in return. said reader.