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Portable object inductively coupled to a fixed station and comprising gain control means

  • US 20100144270A1
  • Filed: 11/20/2009
  • Published: 06/10/2010
  • Est. Priority Date: 12/09/2008
  • Status: Active Grant
First Claim
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1. A portable object comprising:

  • an antenna inductively coupled to a fixed station of a remote transmission device,a variable load impedance with a control terminal,a rectifier connected in parallel to terminals of the antenna,a gain control means receiving signals representative of a difference between a setpoint voltage and an output voltage of the rectifier,a one-bit analog-to-digital converter,command means of integrator type comprising a gain control input connected to an output of said gain control means and an output connected to the control terminal of the variable load impedance,demodulation means connected to the converter output.

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