MECHANICALLY RESISTANT LOOP ANTENNA FOR A PASSPORT

摘要

The invention relates to an antenna for a radio frequency transponder comprising a flat base with a longitudinal edge, an antenna for receiving via electromagnetic coupling on the base, said edge being intended to be parallel to a binding of the booklet, said antenna comprising parallel and perpendicular coils that extend respectively parallel and perpendicular to the longitudinal edge; the transponder is characterized in that said parallel coils have close-together inter-coil spacing at least in an area of binding of the booklet with respect to the inter-coil spacing of the perpendicular coils. The invention also relates to a portable electronic object including said transponder.

主权项

1. A magnetic field antenna for a radio frequency transponder, said antenna comprising a flat base with a longitudinal edge, an antenna on the base for receiving signals via electromagnetic coupling, said edge being intended to be parallel to a binding of the booklet, said antenna comprising parallel and perpendicular coils that extend respectively parallel and perpendicular to the longitudinal edge,
wherein said parallel coils have an inter-coil spacing that is closer than the inter-coil spacing of the perpendicular coils, said parallel coils being located at least in a region substantially located on a midline of the base, said midline being perpendicular to the longitudinal edge.