公开(公告)号：US09742443B2

公开(公告)日：2017-08-22

申请号：US14847810

申请日：2015-09-08

Applicant: NXP B.V.

Inventor： Stefan Mendel ,  Thomas Noisternig ,  Jingfeng Ding ,  Erich Merlin ,  Michael Stark

IPC: H04B1/04 ,  H04W4/00 ,  G06K19/07 ,  H04B5/00 ,  H04L25/00 ,  H04L25/03 ,  G06K7/10

CPC classification number: H04B1/04 ,  G06K7/10237 ,  G06K19/0723 ,  H04B5/0031 ,  H04L25/00 ,  H04L25/03006 ,  H04W4/80

Abstract: Transients caused by load modulation can fee compensated far by adjusting pulse shapes. A radio frequency (RP) carrier signal can be modulated using load modulation. For the modulated RF carrier signal a particular pattern can be detected for a symbol period that precedes a second symbol that does not use load modulation. In response to the detecting, a pulse shape of the first symbol can be adjusted to mitigate the transients.

公开(公告)号：US09204246B2

公开(公告)日：2015-12-01

申请号：US14195687

申请日：2014-03-03

Applicant: NXP B.V.

Inventor： Harald Witschnig ,  Erich Merlin ,  Alexander Maier

IPC: H04B5/00 ,  H04W4/00 ,  H04B5/02 ,  H04B7/00 ,  H04B1/00

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。

公开(公告)号：US08706030B2

公开(公告)日：2014-04-22

申请号：US13725835

申请日：2012-12-21

Applicant: NXP B.V.

Inventor： Harald Witschnig ,  Erich Merlin ,  Alexander Maier

IPC: H04B5/00 ,  H04B7/00 ,  H04B1/00

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。

公开(公告)号：US20130281019A1

公开(公告)日：2013-10-24

申请号：US13924459

申请日：2013-06-21

Applicant: NXP B.V.

Inventor： Peter Raggam ,  Erich Merlin

IPC: H04W4/00

CPC classification number: H04W4/008 ,  G06K19/0723 ,  H04B5/00 ,  H04B5/0012 ,  H04B5/0087 ,  H04W4/80

Abstract: In a near field communication partner device (1) intended for the contactless transmission of digital data to be transmitted having a transmission circuit (2), the transmission circuit (2) comprises a modulation circuit (17) for the amplitude modulation of a carrier signal (CS), which modulation circuit (17) comprises a circuit stage (20, 20′) for producing a plurality of different resistance values (RW1, RW1′) that act on a signal output (TX1, TX2), which resistance values (RW1, RW1′) can be transformed, by means of a signal processing circuit (3) arranged to transform resistance values that belongs to the communication partner device (1), into transformed resistance values (RW2, RW2′), which transformed resistance values (RW2, RW2′) are responsible for damping a transmission coil (7) of the communication partner device (1) when modulated low-level carrier signal sections are generated in a modulated carrier signal.

Abstract translation: 在用于无线传输要发送的数字数据的近场通信伙伴装置（1）中，具有发送电路（2），所述发送电路（2）包括用于载波信号的幅度调制的调制电路（17） （CS），该调制电路（17）包括用于产生作用于信号输出（TX1，TX2）的多个不同电阻值（RW1，RW1'）的电路级（20,20'），该电阻值 RW1，RW1'）可以通过被设置成将属于通信对方装置（1）的电阻值变换的信号处理电路（3）变换为变换后的电阻值（RW2，RW2'），变换后的电阻值 （RW2，RW2'）负责在经调制的载波信号中产生调制的低电平载波信号部分时阻尼通信伙伴装置（1）的传输线圈（7）。

公开(公告)号：US20250119329A1

公开(公告)日：2025-04-10

申请号：US18482940

申请日：2023-10-09

Applicant: NXP B.V.

Inventor： Markus Wobak ,  Erich Merlin

IPC: H04L27/04 ,  H04L27/06

Abstract: A method is provided for detecting a proximity of a radio frequency (RF) field during an ongoing RF activity by a wireless device operating in reader mode. In the method, an input signal is modulated to provide a modulated RF signal comprising a plurality of RF modulation periods. The plurality of RF modulation periods are transmitted by the wireless device operating in the reader mode. An RF detector is enabled to monitor the plurality of modulation periods during the transmitting of the plurality of RF modulation periods. An external RF signal is detected when a characteristic of the plurality of RF modulation periods is different from an expected characteristic. In another embodiment, a wireless device is provided that implements the method.

公开(公告)号：US11005534B2

公开(公告)日：2021-05-11

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.

公开(公告)号：US10942249B2

公开(公告)日：2021-03-09

申请号：US15853038

申请日：2017-12-22

Applicant: NXP B.V.

Inventor： Jingfeng Ding ,  Ghiath Al-kadi ,  Erich Merlin

IPC: G01S5/10 ,  G01S3/50 ,  G01S5/08 ,  G01S5/04 ,  G01S1/02 ,  G01S5/02

Abstract: Embodiments of methods for determining a location of a mobile device, a mobile device, and a location beacon system are described. In an embodiment, a method for determining a location of a mobile device involves receiving, at a dual-antenna receiver of the mobile device, a plurality of ultra wide band (UWB) signals from a group of unsynchronized beacons having a quadrilateral formation, at the mobile device, determining angle of arrival (AoA) information from the UWB signals, and at the mobile device, calculating the location of the mobile device based on the AoA information. Other embodiments are also described.

公开(公告)号：US10044389B2

公开(公告)日：2018-08-07

申请号：US14684318

申请日：2015-04-10

Applicant: NXP B.V.

Inventor： Erich Merlin ,  Helmut Kranabenter ,  Stefan Mendel ,  Michael Pieber

IPC: H04B1/00 ,  H04B1/12 ,  G06K7/00 ,  H04B1/10 ,  H04W72/04

CPC classification number: H04B1/123 ,  G06K7/0008 ,  H04B1/1036 ,  H04W72/0446

Abstract: There is described a contactless communication device. The device comprises (a) a receiver unit (110, 610) having an antenna input (RXn, Vmid, RXp) for connecting to an antenna, the receiver unit (110, 610) being adapted to couple with a transmitting device and to receive an RF signal transmitted by the transmitting device, the receiver unit (110, 610) being further adapted to determine a point of time relating to a position of data within the RF signal, (b) a comparator (120) adapted to generate a comparator output signal (agc_comp) which is indicative of a relation between a voltage at the antenna input (RXn, Vmid, RXp) of the receiver unit (110, 610) and a reference voltage (Vref), and (c) a voltage regulation circuit coupled to the comparator (120) and to the antenna input (RXn, Vmid, RXp) of the receiver unit (110, 610), the voltage regulation circuit being adapted to repetitively regulate the voltage at the antenna input (RXn, Vmid, RXp) based on the comparator output signal (agc_comp). The voltage regulation circuit is adapted to separate each repetitive regulation of the voltage at the antenna input (RXn, Vmid, RXp) by a first time constant prior to the point of time determined by the receiver unit (110, 610) and by a second time constant after the point of time determined by the receiver unit (110, 610), wherein the first time constant is smaller than the second time constant. There is also described a method, a computer program and a computer program product.

公开(公告)号：US20180176712A1

公开(公告)日：2018-06-21

申请号：US15383406

申请日：2016-12-19

Applicant: NXP B.V.

Inventor： Gernot Hueber ,  Johannes Bruckbauer ,  Erich Merlin

IPC: H04W4/00 ,  H04B5/00

CPC classification number: H04W4/80 ,  H04B5/0031 ,  H04B5/0062 ,  H04B5/0075 ,  H04B17/318

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 obtaining transmission output power information related to the communications device and measuring a detuning condition based on the transmission output power information. Other embodiments are also described.

公开(公告)号：US09634727B2

公开(公告)日：2017-04-25

申请号：US14268066

申请日：2014-05-02

Applicant: NXP B.V.

Inventor： Patrick Andre Yves Ozenne ,  Erich Merlin

IPC: H04B5/00 ,  H04B7/06 ,  H04B7/08

CPC classification number: H04B5/0031 ,  H04B5/00 ,  H04B5/0087 ,  H04B7/0602 ,  H04B7/0802

Abstract: Disclosed is an integrated circuit, system or architecture suitable for NFC functionality and including an NFC companion block connectible to a power source and capable to providing a non-continuous power boost to NFC signals, inter alia, thereby facilitating use of a broader range of antennas, multiple antennas, and thereby providing greater NFC functionality and versatility Further disclosed is a detachable antenna embedded in a potentially detachable shell which closely fits a mobile device and is adapted for use with the above mentioned integrated circuit, system or architecture.