Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Andreas Hennig

Gerd Vom Boegel

An antenna arrangement has an inductive transmitting antenna having a main radiating axis, an inductive receiving antenna having a main receiving axis, and an inductive compensator. The inductive receiving antenna is arranged in the main radiating axis of the transmitting antenna. The inductive compensator is electrically connected in series to the receiving antenna and is arranged in a first plane which intersects a second plane. The main receiving axis of the receiving antenna here is normal to the second plane.

Antenna arrangement and transponder reader

A passive transponder includes an antenna, an antenna oscillator circuit and a data source. The antenna oscillator circuit is configured to operate at a first resonant frequency or at a second resonant frequency, depending on reception of energy at the transponder or on a data transmission from/to the data source.

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Muehlheim, Germany

Andreas Hennig