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公开(公告)号：US20140295756A1
公开(公告)日：2014-10-02
申请号：US14302293
申请日：2014-06-11
Applicant: NXP B.V.
Inventor： Erich Merlin
IPC: H04B5/00 , G06K19/077
CPC classification number: H04B5/0025 , G06K19/07749 , H04B5/0031 , H04B5/0037 , H04B5/0056 , H04B5/0062 , H04B5/0075
Abstract: A Near Field Communication (NFC) device for contactless communication includes a transmitter being adapted to generate an electromagnetic carrier signal and to modulate the carrier signal according to transmitting data, an antenna having an inductor, which antenna is connected to and driven by the transmitter with the modulated carrier signal, and wherein connection points of the antenna are further connected to inputs of switches, the outputs of these switches being switchable between ground potential and inputs of a rectifier, the outputs of the rectifier being fed to power supply rails of the NFC device.
Abstract translation: 用于非接触通信的近场通信（NFC）设备包括适于产生电磁载波信号并根据发射数据调制载波信号的发射机，具有电感器的天线，该天线连接到发射机并由发射机驱动， 调制的载波信号，并且其中天线的连接点进一步连接到开关的输入，这些开关的输出可在地电位和整流器的输入之间切换，整流器的输出馈送到NFC的电源轨 设备。
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公开(公告)号：US20130109312A1
公开(公告)日：2013-05-02
申请号：US13725835
申请日：2012-12-21
Applicant: NXP B.V.
Inventor： Harald Witschnig , Erich Merlin , Alexander Maier
IPC: H04B5/00
CPC classification number: H04W4/008 , H04B5/0031 , H04B5/0056 , H04B5/0075 , H04B5/0081 , H04B5/02 , H04W4/80
Abstract: A radio frequency communication device has data transmission means and data receiving means. The data transmission means comprise load modulating means being adapted to receive a radio frequency carrier signal emitted by another RF communication device and to modulate the RF carrier signal by means of load modulation in accordance with data to be sent. The data receiving means comprise a RF frequency carrier signal generator being adapted to emit a radio frequency carrier signal and load demodulating means being connected to an emission path of the radio frequency carrier signal and demodulating the radio frequency carrier signal when it has been load modulated by another RF communication device.
Abstract translation: 射频通信装置具有数据发送装置和数据接收装置。 数据传输装置包括负载调制装置，其适于接收由另一RF通信装置发射的射频载波信号，并根据要发送的数据通过负载调制来调制RF载波信号。 数据接收装置包括RF频率载波信号发生器，其适于发射射频载波信号，并且负载解调装置连接到射频载波信号的发射路径，并且当其被载波调制时解调该射频载波信号 另一个RF通信设备。
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公开(公告)号：US11955729B2
公开(公告)日：2024-04-09
申请号：US17705221
申请日：2022-03-25
Applicant: NXP B.V.
Inventor： Oliver Kronschläger , David Knabl , Andreas Merl , Michael Stark , Erich Merlin
IPC: H01Q7/08
CPC classification number: H01Q7/08
Abstract: Embodiments of an antenna system and a method for operating an antenna are disclosed. In an embodiment, an antenna system includes a first ferrite element, a second ferrite element, a first coil wrapped around the first ferrite element, a second coil wrapped around the second ferrite element, a first antenna interface electrically coupled to the first coil, a second antenna interface electrically coupled to the second coil, and a conductor network connected between the first coil, the second coil, the first antenna interface, and the second antenna interface.
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24.发明公开公开(公告)号：US20240113564A1
公开(公告)日：2024-04-04
申请号：US17936926
申请日：2022-09-30
Applicant: NXP B.V.
Inventor： Markus Wobak , Erich Merlin , Ulrich Neffe
Abstract: A wireless charging (WLC) poller device and WLC listener device are provided. A method for performing a presence check of the WLC listener device includes providing a radio frequency (RF) presence check signal. An input signal from the antenna by the poller device is received concurrently with the transmission of the RF presence check signal. A rate of change of a magnitude of the input signal is measured during the transmission of the presence check signal. A difference between the input signal and an expected input signal is determined. A presence of the listener device is detected if an absolute value of the measured rate of change of the input signal is above a threshold rate of change, and the difference between the input signal and the expected input signal is within a predetermined distance. Prior to the presence check, a capacitor of the WLC listener device may be discharged.
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公开(公告)号：US20230396274A1
公开(公告)日：2023-12-07
申请号：US18321078
申请日：2023-05-22
Applicant: NXP B.V.
Inventor： Adrian Rafael Krenn , Rahul Nadgouda , Erich Merlin , Martin Buchsbaum
CPC classification number: H04B1/0458 , H03H7/38 , H04B5/0062 , H04B5/0031
Abstract: There is described a method of operating an NFC device, the method comprising: determining a resonance frequency of a matching network of the NFC device; modulating, by a modulator, a carrier signal received from an external reader, resulting in a modulated carrier signal; controlling, using a controller, a transmission of the modulated carrier signal to the external reader; and transmitting, by a transmitter driver, said modulated carrier signal, said transmitter driver having at least one configurable setting that influences a damping behavior of the transmitted modulated carrier signal, wherein, during a modulation phase of the NFC device, the controller selects and applies the at least one configurable setting based on the determined resonance frequency such that a clock synchronization window is widened. Furthermore, a corresponding NFC device is described.
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Patent Agency Ranking
公开(公告)号：US20230307837A1
公开(公告)日：2023-09-28
申请号：US17705221
申请日：2022-03-25
Applicant: NXP B.V.
Inventor： Oliver Kronschläger , David Knabl , Andreas Merl , Michael Stark , Erich Merlin
IPC: H01Q7/08
CPC classification number: H01Q7/08
Abstract: Embodiments of an antenna system and a method for operating an antenna are disclosed. In an embodiment, an antenna system includes a first ferrite element, a second ferrite element, a first coil wrapped around the first ferrite element, a second coil wrapped around the second ferrite element, a first antenna interface electrically coupled to the first coil, a second antenna interface electrically coupled to the second coil, and a conductor network connected between the first coil, the second coil, the first antenna interface, and the second antenna interface.
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公开(公告)号：US11057010B2
公开(公告)日：2021-07-06
申请号：US16711562
申请日：2019-12-12
Applicant: NXP B.V.
Inventor： Ghiath Al-kadi , Erich Merlin , Ulrich Neffe , Ludovic Oddoart
Abstract: Embodiments of a power amplifier and method of operating a power amplifier are disclosed. In one embodiment, a power amplifier includes a pulse wave modulation (PWM) controller, a first power control stage configured to drive a first output between VDD and VSS in response to a control signal from the PWM controller, a second power control stage configured to drive a second output between VDD and VSS in response to a control signal from the PWM controller, and a mid-voltage control circuit configured to hold the voltage of the first output at a mid-voltage that is between VDD and VSS during an interval between when the first output is driven between VDD and VSS and hold the voltage of the second output at the mid-voltage during an interval between when the first output is driven between VDD and VSS.
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公开(公告)号：US20210075470A1
公开(公告)日：2021-03-11
申请号：US16988852
申请日：2020-08-10
Applicant: NXP B.V.
Inventor： Fred George NUNZIATA , Martin Buchsbaum , Erich Merlin , Adrian Rafael Krenn
IPC: H04B5/00
Abstract: In accordance with a first aspect of the present disclosure, a near field communication (NFC) device is provided, comprising: a modulator configured to modulate a carrier signal received from an external reader, resulting in a modulated carrier signal; a controller configured to control a transmission of the modulated carrier signal to the external reader; a transmitter driver configured to transmit said modulated carrier signal, said transmitter driver having a variable resistance; wherein the controller is further configured to change said variable resistance during a modulation phase of the NFC device such that a clock synchronization window is widened. In accordance with a second aspect of the present disclosure, a corresponding method of operating an NFC device is conceived. In accordance with a third aspect of the present disclosure, a non-transitory machine-readable medium is provided, comprising instructions which, when executed, carry out a method of the kind set forth.
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29.发明授权公开(公告)号：US10720967B2
公开(公告)日：2020-07-21
申请号：US15715027
申请日：2017-09-25
Applicant: NXP B.V.
Inventor： Gernot Hueber , Erich Merlin , Johannes Bruckbauer
Abstract: Embodiments of methods and systems for operating a communications device that communicates via inductive coupling are described. In an embodiment, a method for operating a communications device that communicates via inductive coupling involves adjusting a configuration of the communications device in response to a clock signal that is synchronized to a received clock signal, obtaining information that corresponds to transmission current or power generated in response to the adjusted configuration, and quantifying a detuning condition in response to the obtained information. Other embodiments are also described.
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公开(公告)号：US20180269560A1
公开(公告)日：2018-09-20
申请号：US15462757
申请日：2017-03-17
Applicant: NXP B.V.
Inventor： Jingfeng Ding , Ghiath Al-kadi , Erich Merlin
CPC classification number: H01Q1/2216 , G06K7/10237 , G06K19/0727 , H01Q1/243 , H01Q1/50 , H01Q3/26 , H04B5/0031 , H04B5/0037 , H04B5/0075
Abstract: A near field communication (NFC) device capable of operating by being powered by the field includes an NFC module for generating an electromagnetic carrier signal and modulating the carrier signal, and an antenna circuit coupled to and driven by said NFC module with the modulated carrier signal. A differential power combiner circuit is coupled to said NFC module via output terminals of said NFC module. A powered by the field circuit of the NFC device is adapted to harvest energy from an external field to power said NFC device. The power by the field circuit has a first terminal coupled to an output of said differential power combiner circuit via a first impedance block and a second terminal coupled to an input of said antenna circuit via a second impedance block. The NFC device is adapted to be able to operate in a powered by the field card mode.
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