公开(公告)号：US20150295608A1

公开(公告)日：2015-10-15

申请号：US14684318

申请日：2015-04-10

Applicant: NXP B.V.

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

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

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.

Abstract translation: 描述了一种非接触式通信设备。 所述设备包括（a）具有用于连接到天线的天线输入（RXn，Vmid，RXp）的接收器单元（110,610），所述接收器单元（110,610）适于与发射设备耦合并且接收 由发射设备发射的RF信号，接收机单元（110,610）还适于确定与RF信号内的数据位置有关的时间点，（b）比较器（120），适于产生比较器 输出信号（agc_comp），其指示接收器单元（110,610）的天线输入端（RXn，Vmid，RXp）处的电压与参考电压（Vref）之间的关系，以及（c）电压调节电路 耦合到所述比较器（120）和所述接收器单元（110,610）的所述天线输入端（RXn，Vmid，RXp），所述电压调节电路适于重复地调节所述天线输入端的电压（RXn，Vmid，RXp ）基于比较器输出信号（agc_comp）。 电压调节电路适于在由接收器单元（110,610）确定的时间点之前将天线输入端（RXn，Vmid，RXp）处的电压的每次重复调节分离第一时间常数，并且将第二时间 在由接收器单元（110,610）确定的时间点之后的时间常数，其中第一时间常数小于第二时间常数。 还描述了一种方法，计算机程序和计算机程序产品。

公开(公告)号：US20150031315A1

公开(公告)日：2015-01-29

申请号：US14321433

申请日：2014-07-01

Applicant: NXP B.V.

Inventor： Michael Pieber ,  Erich Merlin ,  Stefan Mendel

IPC: H04B1/44

CPC classification number: H04B1/44 ,  H04B5/0075 ,  H04B5/02

Abstract: There is described an RF bidirectional communication device utilizing active load modulation, the device comprising (a) a resonance circuit including an antenna (326), and (b) a control unit (322) for controlling communication of the device, including switching between a transmission mode and a receiving mode, wherein the control unit is adapted to (c) modify a configuration of the resonance circuit such that the resonance circuit has a first resonance frequency (f0) when the device is in the transmission mode and a second resonance frequency (f0+Δf) when the device is in the receiving mode, and (d) modify the configuration of the resonance circuit such that a Q-factor of the resonance circuit is periodically decreased while the device is in the transmission mode. There is also described a corresponding method and a system comprising a RF device and a reader/writer device. Furthermore, there is described a computer program and a computer program product.

Abstract translation: 描述了利用有源负载调制的RF双向通信装置，该装置包括（a）包括天线的谐振电路（326）和（b）用于控制装置的通信的控制单元（322），包括在 传输模式和接收模式，其中所述控制单元适于（c）修改所述谐振电路的配置，使得当所述设备处于所述传输模式时所述谐振电路具有第一谐振频率（f0），并且所述谐振电路具有第二谐振频率 （f0 +＆Dgr; f）当设备处于接收模式时，（d）修改谐振电路的配置，使得谐振电路的Q因子在器件处于传输模式时周期性地减小。 还描述了包括RF设备和读取器/写入器设备的相应方法和系统。 此外，描述了计算机程序和计算机程序产品。

公开(公告)号：US08781395B2

公开(公告)日：2014-07-15

申请号：US13924459

申请日：2013-06-21

Applicant: NXP B.V.

Inventor： Peter Raggam ,  Erich Merlin

IPC: H04B5/00

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：US10992504B2

公开(公告)日：2021-04-27

申请号：US16246297

申请日：2019-01-11

Applicant: NXP B.V.

Inventor： Lukas Zoescher ,  Erich Merlin ,  Ulrich Andreas Muehlmann

IPC: H04L27/20 ,  H04L7/02 ,  H04B1/38 ,  H04B5/00

Abstract: In accordance with a first aspect of the present disclosure, an active load modulation (ALM) transceiver is provided, comprising a transmitter configured to send a transmit signal to an external device, wherein the transceiver is configured to adjust one or more parameters of the transmit signal at the end of at least one burst of said transmit signal. In accordance with a second aspect of the present disclosure, a method of operating an active load modulation (ALM) transceiver is conceived, comprising sending, by a transmitter of the transceiver, a transmit signal to an external device, and adjusting, by the transceiver, one or more parameters of the transmit signal at the end of at least one burst of said transmit signal.

公开(公告)号：US10390200B2

公开(公告)日：2019-08-20

申请号：US15383406

申请日：2016-12-19

Applicant: NXP B.V.

Inventor： Gernot Hueber ,  Johannes Bruckbauer ,  Erich Merlin

IPC: H04B5/00 ,  H04W4/80 ,  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：US10361474B2

公开(公告)日：2019-07-23

申请号：US15462757

申请日：2017-03-17

Applicant: NXP B.V.

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

IPC: H01Q3/26 ,  H01Q1/50 ,  H01Q1/22 ,  H04B5/00 ,  G06K7/10 ,  G06K19/07 ,  H01Q1/24

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.

公开(公告)号：US20190215203A1

公开(公告)日：2019-07-11

申请号：US16246297

申请日：2019-01-11

Applicant: NXP B.V.

Inventor： Lukas Zoescher ,  Erich Merlin ,  Ulrich Andreas Muehlmann

IPC: H04L27/20 ,  H04B1/38 ,  H04L7/02

CPC classification number: H04L27/20 ,  H04B1/38 ,  H04B5/0031 ,  H04B5/0062 ,  H04L7/02

Abstract: In accordance with a first aspect of the present disclosure, an active load modulation (ALM) transceiver is provided, comprising a transmitter configured to send a transmit signal to an external device, wherein the transceiver is configured to adjust one or more parameters of the transmit signal at the end of at least one burst of said transmit signal. In accordance with a second aspect of the present disclosure, a method of operating an active load modulation (ALM) transceiver is conceived, comprising sending, by a transmitter of the transceiver, a transmit signal to an external device, and adjusting, by the transceiver, one or more parameters of the transmit signal at the end of at least one burst of said transmit signal.

公开(公告)号：US09401739B2

公开(公告)日：2016-07-26

申请号：US14321433

申请日：2014-07-01

Applicant: NXP B.V.

Inventor： Michael Pieber ,  Erich Merlin ,  Stefan Mendel

IPC: H04B1/44 ,  H04B5/00 ,  H04B5/02

CPC classification number: H04B1/44 ,  H04B5/0075 ,  H04B5/02

Abstract: There is described an RF bidirectional communication device utilizing active load modulation, the device comprising (a) a resonance circuit including an antenna (326), and (b) a control unit (322) for controlling communication of the device, including switching between a transmission mode and a receiving mode, wherein the control unit is adapted to (c) modify a configuration of the resonance circuit such that the resonance circuit has a first resonance frequency (f0) when the device is in the transmission mode and a second resonance frequency (f0+Δf) when the device is in the receiving mode, and (d) modify the configuration of the resonance circuit such that a Q-factor of the resonance circuit is periodically decreased while the device is in the transmission mode. There is also described a corresponding method and a system comprising a RF device and a reader/writer device. Furthermore, there is described a computer program and a computer program product.

Abstract translation: 描述了利用有源负载调制的RF双向通信装置，该装置包括（a）包括天线的谐振电路（326）和（b）用于控制装置的通信的控制单元（322），包括在 传输模式和接收模式，其中所述控制单元适于（c）修改所述谐振电路的配置，使得当所述设备处于所述传输模式时所述谐振电路具有第一谐振频率（f0），并且所述谐振电路具有第二谐振频率 （f0 +Δf），以及（d）修改谐振电路的结构，使得谐振电路的Q因子在器件处于传输模式时周期性地减小。 还描述了包括RF设备和读取器/写入器设备的相应方法和系统。 此外，描述了计算机程序和计算机程序产品。

公开(公告)号：US09246550B2

公开(公告)日：2016-01-26

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。

公开(公告)号：US20140335784A1

公开(公告)日：2014-11-13

申请号：US14268066

申请日：2014-05-02

Applicant: NXP B.V.

Inventor： Patrick Andre Yves Ozenne ,  Erich Merlin

IPC: H04B5/00

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 greaterNFC 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.

Abstract translation: 公开了一种适用于NFC功能的集成电路，系统或架构，并且包括可连接到电源的NFC配套块，并且能够提供对NFC信号的非连续功率升压，从而便于使用更宽范围的天线 多个天线，从而提供更大的NFC功能和多功能性进一步公开了一种嵌入在可拆卸外壳中的可拆卸天线，其紧密地配合移动设备并且适于与上述集成电路，系统或架构一起使用。