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公开(公告)号：EP3672091A1
公开(公告)日：2020-06-24
申请号：EP18213835.4
申请日：2018-12-19
Inventor： ROZMAN, Jernej , SVETE, Tilen
IPC: H04B5/00
Abstract: The present disclosure relates to a circuit (3) comprising: an In-phase Quadrature down converter (16) capable of being coupled to an antenna of a first NFC device (1); dc cancellation circuits (321, 381; 32Q, 38Q) coupled at outputs of said converter; and a circuitry (341, 34Q, 36) for analyzing dc signals outputted by said dc cancellation circuits to detect the presence of a second NFC device (2) .
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