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公开(公告)号：US20210133526A1
公开(公告)日：2021-05-06
申请号：US17065582
申请日：2020-10-08
Applicant: NXP B.V.
Inventor： Thomas Pichler , Ivan Jesus Rebollo Pimentel , Stefan Maier , Egas Carvalho Henes Neto , Harcharan Singh Madaan , Slawomir Rafal Malinowski
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 controller, wherein: the modulator is configured to generate a modulated signal to be transmitted to an external RFID reader; the controller is configured to regulate an input voltage for the modulator, resulting in a regulated input voltage, and to feed said regulated input voltage to the modulator. In accordance with a second aspect of the present disclosure, a corresponding method of operating a radio frequency identification (RFID) transponder is provided.
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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.
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公开(公告)号：US11886216B2
公开(公告)日：2024-01-30
申请号：US17453218
申请日：2021-11-02
Applicant: NXP B.V.
Inventor： Ivan Jesus Rebollo Pimentel , Thomas Pichler , Ronald van Langevelde
CPC classification number: G05F1/575 , G06K19/0715 , H02H9/04
Abstract: A voltage regulator is provided. The voltage regulator includes a shunt transistor and a feedback circuit. The shunt transistor has a first current electrode coupled to a first voltage source terminal, a second current electrode coupled to a second voltage source terminal, a control electrode coupled to receive a reference voltage, and a body electrode. The feedback circuit has an input terminal coupled to the body electrode of the shunt transistor, and an output terminal coupled to the control electrode of the shunt transistor. The voltage regulator is suitable for use in a passive RFID device to protect the device from over-voltage damage. In another embodiment, a method for regulating a voltage is provided.
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公开(公告)号：US11875214B2
公开(公告)日：2024-01-16
申请号：US17305071
申请日：2021-06-30
Applicant: NXP B.V.
Inventor： Thomas Pichler , Ivan Jesus Rebollo Pimentel
CPC classification number: G06K7/10198 , G06K7/10297 , G06K7/10346 , G06K19/0723
Abstract: In accordance with a first aspect of the present disclosure, a radio frequency identification (RFID) transponder is provided, comprising: a receiver configured to receive a command from an external RFID reader, wherein the command is a first command transmitted by the RFID reader during a communication session and wherein said command comprises a at least one parameter indicative of one or more modifiable settings of the RFID transponder; and a controller configured to modify the settings of the RFID transponder in accordance with a value of said parameter. In accordance with a second aspect of the present disclosure, a corresponding method of operating a radio frequency identification (RFID) transponder is conceived.
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公开(公告)号：US11593603B2
公开(公告)日：2023-02-28
申请号：US17451886
申请日：2021-10-22
Applicant: NXP B.V.
Inventor： Thomas Pichler , Ivan Jesus Rebollo Pimentel
IPC: G06K19/07 , H02M3/07 , G06K19/077
Abstract: There is described a rectifier circuit for providing and limiting a supply voltage to an RFID tag, the circuit including a pair of antenna input terminals configured to receive an input signal from an RFID tag antenna. A plurality of charge pump stages are coupled in cascade in such a way that an input terminal of a first charge pump stage in the cascade is connected to ground and an input terminal of each subsequent charge pump stage in the cascade is coupled to an output terminal of the preceding charge pump stage in the cascade. A control logic is configured to select the output terminal of one charge pump stage among the plurality of charge pump stages to provide the supply voltage. Furthermore, an RFID tag and a method of providing and limiting a supply voltage to an RFID tag are described.
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Patent Agency Ranking
公开(公告)号：US11586869B2
公开(公告)日：2023-02-21
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：US11580315B2
公开(公告)日：2023-02-14
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：US20220198236A1
公开(公告)日：2022-06-23
申请号：US17247647
申请日：2020-12-18
Applicant: NXP B.V.
Inventor： Thomas Pichler , Ivan Jesus Rebollo Pimentel
IPC: G06K19/07 , G06K19/077
Abstract: A Radio Frequency Identification (RFID) tag is disclosed. The RFID tag includes an antenna to receive a high frequency signal, a capacitor bank coupled with the antenna, a charge pump coupled with the antenna configured to convert the high frequency signal to a direct current (DC) signal, an envelope detector to measure peak voltage of the high frequency signal and a detector to compare an output of the charge pump and an output of the envelope detector. The RFID tag also includes an impedance tuning circuit coupled with the charge pump and the envelope detector configured change a capacitance of the capacitor bank based on an output of the detector and the envelope detector.
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公开(公告)号：US11270177B2
公开(公告)日：2022-03-08
申请号：US17015871
申请日：2020-09-09
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: at least one functional component configured to perform a function of the RFID transponder; a charge pump configured to supply an output voltage to said functional component, wherein said charge pump comprises a plurality of charge pump stages; a charge pump controller configured to control a number of charge pump stages which contribute to the output voltage. 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：US20180224879A1
公开(公告)日：2018-08-09
申请号：US15887998
申请日：2018-02-03
Applicant: NXP B.V.
Inventor： Ivan Jesus Rebollo Pimentel , Gerhard Martin Landauer
CPC classification number: G05F3/245 , G06K19/0701
Abstract: A reference voltage generator circuit (100) is disclosed, comprising a first transistor (101) having a first channel type and a second transistor (102) having a second channel type. A current source (104) is connected to a source terminal of the first transistor (101). A drain terminal of the second transistor (102) is connected to a drain terminal of the first transistor (101). The reference voltage generator circuit (100) further comprises a third transistor (103) having the second channel type, wherein a drain terminal of the third transistor (103) is connected to a source terminal of the second transistor (102). A node between the source terminal of the second transistor (102) and the drain terminal of the third transistor (103) is connected to a gate terminal of the first transistor (101). A connection for a reference voltage (Vrc) is provided between the current source (104) and the source terminal of the first transistor (101).
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