| 摘要 |
The invention relates to a device (30) for receiving data by inductive coupling, comprising an inductive-type antenna circuit (10) consisting of a coil (11) that is cross-flown by an antenna signal (Sa) and a control circuit (2) consisting of binary ports (P1-P7) that can be provided with a high impedance (HZ). The inventive device comprises at least two specially equipped filters (31, 32) in order to enable a first charge modulation signal (Sx) present in the antenna signal (Sa) to be received on a first terminal, whereby said filters are both connected by another terminal to a port (P5, P6) of the control circuit (2). The control circuit is equipped to select one of the filters, whereby the port connected to the filter that is to be selected is considered as 1 and the port connected to the other filter is provided with a high impedance. The invention can more specifically be used with contactless chipcard readers.
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