• Patent Title: Load-modulation detection component
  • Application No.: US15642527
    Application Date: 2017-07-06
  • Publication No.: US10009070B2
    Publication Date: 2018-06-26
  • Inventor: Remco Van De Beek
  • Applicant: NXP B.V.
  • Applicant Address: NL Eindhoven
  • Assignee: NXP B.V.
  • Current Assignee: NXP B.V.
  • Current Assignee Address: NL Eindhoven
  • Agent Rajeev Madnawat
  • Priority: EP16181954 20160729
  • Main IPC: H04B5/00
  • IPC: H04B5/00 H04W4/00 H04W4/80
Load-modulation detection component
Abstract:
A load-modulation detection component for an inductive coupling reader device. The load-modulation receiver device is arranged to receive an antenna voltage signal representative of a voltage across an antenna of the inductive coupling reader device and output at least one load-modulated signal. The load-modulation detection component comprises a down-converter component arranged to mix the antenna voltage signal with a down-conversion signal to generate a down-converted signal, a series capacitive component coupled in series between an output of the down-converter component and an output of the load-modulation receiver, and a switched capacitor resistor circuit coupled between the output of the load-modulation receiver and a first reference voltage.
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