Invention Grant
- Patent Title: Resistive evaluation of the coupling factor of an electromagnetic transponder
- Patent Title (中): 电磁应答器的耦合因子的电阻评估
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Application No.: US12815737Application Date: 2010-06-15
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Publication No.: US08693956B2Publication Date: 2014-04-08
- Inventor: Luc Wuidart
- Applicant: Luc Wuidart
- Applicant Address: FR Rousset
- Assignee: STMicroelectronics (Rousset) SAS
- Current Assignee: STMicroelectronics (Rousset) SAS
- Current Assignee Address: FR Rousset
- Agency: Wolf, Greenfield & Sacks, P.C.
- Priority: FR0954148 20090619
- Main IPC: H04B17/00
- IPC: H04B17/00
Abstract:
A method for evaluating the current coupling factor between an electromagnetic transponder and a terminal, wherein a ratio between data, representative of a voltage across an oscillating circuit of the transponder and obtained for two values of the resistive load, is compared with one or several thresholds.
Public/Granted literature
- US20100323629A1 RESISTIVE EVALUATION OF THE COUPLING FACTOR OF AN ELECTROMAGNETIC TRANSPONDER Public/Granted day:2010-12-23
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