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公开(公告)号：US11720778B2
公开(公告)日：2023-08-08
申请号：US17445752
申请日：2021-08-24
Applicant: NXP B.V.
Inventor： Thomas Pichler , Ivan Jesus Rebollo Pimentel
IPC: G08B13/14 , G06K19/07 , H03K17/693
CPC classification number: G06K19/0713 , G06K19/0715 , G06K19/0726 , H03K17/693
Abstract: A voltage limiter incorporated in a radio frequency identification (RFID) integrated circuit (IC) for a RFID tag is disclosed. The RFID IC includes a radio frequency (RF) rectifier and a clock generator. The RF rectifier is configured to convert an AC signal received from an antenna incorporated in the RFID tag to a DC signal. The voltage limiter includes a current sink device coupled between output of the RF rectifier and ground and a charge pump to control conduction of current through the current sink device to limit output voltage of the RF rectifier to a predefined voltage level.
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公开(公告)号：US11636303B2
公开(公告)日：2023-04-25
申请号：US17247997
申请日：2021-01-04
Applicant: NXP B.V.
Inventor： Thomas Pichler , Ivan Jesus Rebollo Pimentel
IPC: G06K19/077 , G06K19/07 , H02M3/07
Abstract: A ground switch is disclosed. The ground switch includes an antenna port, a pair of switching devices coupled with the antenna port and a charge pump coupled with the pair of devices and configured to turn on/off the pair of devices based on an AC input signal received through the antenna port and a DC offset voltage added to the AC input signal. The ground switch further includes a clamping circuit to clamp an output of the charge pump. The ground switch is configured to provide a stable ground to components of devices such that a radio frequency identification (RFID) device.
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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
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.
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公开(公告)号：US10284081B2
公开(公告)日：2019-05-07
申请号：US15289172
申请日：2016-10-08
Applicant: NXP B.V.
Inventor： Ivan Jesus Rebollo Pimentel
Abstract: A regulated charge pump circuit and method of operation are described. A charge pump is configured to supply an output voltage to a load, and includes at least one charge pump stage, a charge pump driver arranged to drive the charge pump stages and a controllable current source connected between a supply voltage and the charge pump driver. An analog regulation loop includes a measurement circuit arranged to output an analog regulation signal indicative of a difference between a current value of the output voltage and a target value of the output voltage. A signal path is connected to the charge pump to supply the analog regulation signal to the controllable current source to operate the controllable current source to modulate the supply voltage that can be provided to the charge pump driver to regulate the output voltage.
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公开(公告)号：US20230359234A1
公开(公告)日：2023-11-09
申请号：US18298005
申请日：2023-04-10
Applicant: NXP B.V.
Inventor： Thomas Pichler , Ivan Jesus Rebollo Pimentel
CPC classification number: G05F1/575 , G05F1/565 , G06K19/0715
Abstract: A voltage limiter for a radio-frequency identification (RFID) integrated circuit (IC) for an RFID tag and a method for operating a voltage limiter is disclosed. The RFID IC includes a radio-frequency (RF) rectifier. The voltage limiter comprises: a current sink device coupled between an output of the RF rectifier and ground; a reference generator having an output for providing a reference voltage (Vlim) for controlling a current through the current sink device to limit a voltage (Vrec) at the output of the RF rectifier to values below a predefined voltage level; and feedback circuitry arranged to provide a feedback current to the reference generator to vary the reference voltage (Vlim), the feedback current being dependent on the current through the current sink device.
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Patent Agency Ranking
公开(公告)号：US20230064494A1
公开(公告)日：2023-03-02
申请号：US17445752
申请日：2021-08-24
Applicant: NXP B.V.
Inventor： Thomas Pichler , Ivan Jesus Rebollo Pimentel
IPC: G06K19/07 , H03K17/693
Abstract: A voltage limiter incorporated in a radio frequency identification (RFID) integrated circuit (IC) for a RFID tag is disclosed. The RFID IC includes a radio frequency (RF) rectifier and a clock generator. The RF rectifier is configured to convert an AC signal received from an antenna incorporated in the RFID tag to a DC signal. The voltage limiter includes a current sink device coupled between output of the RF rectifier and ground and a charge pump to control conduction of current through the current sink device to limit output voltage of the RF rectifier to a predefined voltage level.
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公开(公告)号：US11556751B2
公开(公告)日：2023-01-17
申请号：US17303487
申请日：2021-05-29
Applicant: NXP B.V.
Inventor： Thomas Pichler , Ivan Jesus Rebollo Pimentel
IPC: G06K19/07 , G06K19/073
Abstract: A Radio Frequency Identification (RFID) tag is disclosed. The RFID tag includes an antenna port to receive an input AC signal and a hybrid limiter including a clamping device configured to limit a voltage of the input AC signal to a preconfigured limit. The hybrid limiter is configured to provide a stable ground reference for the clamping device.
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公开(公告)号：US20220414357A1
公开(公告)日：2022-12-29
申请号：US17806547
申请日：2022-06-13
Applicant: NXP B.V.
Inventor： Egas Carvalho Henes Neto , Slawomir Rafal Malinowski , Ivan Jesus Rebollo Pimentel , Thomas Pichler
Abstract: It is described an RF communication device comprising: i) an RF antenna functionality; ii) at least one antenna pad connected to the RF antenna functionality; iii) a further functionality which is not an RF antenna functionality; and iv) at least one non-antenna pad electrically connected to the further functionality. The antenna pad and the non-antenna pad are arranged to be short-circuited with each other, and the non-antenna pad is electrically connected via a connection line to the further functionality within the RF communication device.
Further, a method of manufacturing an RF communication device is described.-
公开(公告)号：US20210248331A1
公开(公告)日：2021-08-12
申请号：US16786109
申请日：2020-02-10
Applicant: NXP B.V.
Abstract: A radio frequency identification (RFID) transponder includes a current control module for controlling a current consumption of a memory based on an amount of available power, and a control logic for controlling a memory operation in response to the control of the current consumption by the current control module. The RFID transponder further includes a power detector that is configured to continuously monitor and detect the amount of available power and output a power-dependent control signal. The power-dependent control signal is used by the RFID transponder to control the current consumption of the memory in dependence on the available power.
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公开(公告)号：US11023797B2
公开(公告)日：2021-06-01
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.
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