公开(公告)号：US20210342661A1

公开(公告)日：2021-11-04

申请号：US17221419

申请日：2021-04-02

Applicant: NXP B.V.

Inventor： Thomas PICHLER ,  Ivan Jesus Rebollo Pimentel

IPC: G06K19/07 ,  H02M3/07

Abstract: In accordance with a first aspect of the present disclosure, a radio frequency identification (RFID) transponder is provided, comprising a charge pump and at least one functional component, wherein: the charge pump is configured to convert an input voltage into an output voltage and to supply the output voltage to the functional component; the functional component is configured to perform a function of the RFID transponder using the output voltage of the charge pump; wherein the charge pump comprises a diode or switch transistor and at least one capacitor coupled to said diode or switch transistor, and wherein the capacitor is configured to compensate for a change of an impedance of said diode or switch transistor. In accordance with a second aspect of the present disclosure, a corresponding method of operating an RFID transponder is conceived.

公开(公告)号：US20200372313A1

公开(公告)日：2020-11-26

申请号：US16872952

申请日：2020-05-12

Applicant: NXP B.V.

Inventor： Thomas PICHLER ,  Christian Weidinger ,  Ivan Jesus Rebollo Pimentel

IPC: G06K19/07

Abstract: In accordance with a first aspect of the present disclosure, a radio frequency identification (RFID) transponder is provided, comprising a modulator and a modulator controller, wherein the modulator is configured to generate a modulated signal to be transmitted to an external RFID reader, and wherein the modulator controller is configured to control a duty cycle of the modulator in dependence on an available amount of power. In accordance with a second aspect of the present disclosure, a method of operating a radio frequency identification (RFID) transponder is conceived, comprising: generating, by a modulator of the RFID transponder, a modulated signal to be transmitted to an external RFID reader; controlling, by a modulator controller of the RFID transponder, a duty cycle of the modulator in dependence on an available amount of power.