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1. (WO2016055476) TRANSPONDER ASSEMBLY AND METHOD FOR OPERATING A TRANSPONDER

Pub. No.:    WO/2016/055476    International Application No.:    PCT/EP2015/073048
Publication Date: Fri Apr 15 01:59:59 CEST 2016 International Filing Date: Wed Oct 07 01:59:59 CEST 2015
IPC: G06K 19/07
Applicants: CONTINENTAL AUTOMOTIVE GMBH
Inventors: FROITZHEIM, Herbert
SASS, Dieter
Title: TRANSPONDER ASSEMBLY AND METHOD FOR OPERATING A TRANSPONDER
Abstract:
The invention relates to a transponder assembly, comprising an inductor (1) and a capacitor (2), which are connected in parallel with each other between a first circuit node and a second circuit node and form an oscillating circuit. The oscillating circuit is designed to be excited when the inductor (1) is exposed to an electromagnetic field. A switching element (3) is connected in parallel to the inductor (1) and the capacitor (2) between the first circuit node and the second circuit node and is designed to be opened or closed. A voltage (Uc) across the capacitor (2) and a current (II) through the inductor (1) have a sinusoidal progression when the oscillating circuit is excited and the switching element (3) is open. The switching element (3) is also designed to be closed for a specifiable duration at the time of a zero crossing of the voltage (Uc) across the capacitor and thereby to short-circuit the oscillating circuit.