-
1.发明申请公开(公告)号：US20190097688A1
公开(公告)日：2019-03-28
申请号：US15715044
申请日：2017-09-25
申请人： NXP B.V.
IPC分类号： H04B5/00
CPC分类号： H04B5/0075 , H04B5/0031 , H04B5/0081
摘要： 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 detecting a system condition associated with the communications device and tuning a matching network of the communications device in response to the system condition, where the matching network includes a hybrid transformer that separates a receiver of the communications device from a transmitter of the communications device. Other embodiments are also described.
-
公开(公告)号：US20180269560A1
公开(公告)日：2018-09-20
申请号：US15462757
申请日：2017-03-17
申请人： NXP B.V.
发明人： Jingfeng Ding , Ghiath Al-kadi , Erich Merlin
CPC分类号： H01Q1/2216 , G06K7/10237 , G06K19/0727 , H01Q1/243 , H01Q1/50 , H01Q3/26 , H04B5/0031 , H04B5/0037 , H04B5/0075
摘要： 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：US10942249B2
公开(公告)日：2021-03-09
申请号：US15853038
申请日：2017-12-22
申请人： NXP B.V.
发明人： Jingfeng Ding , Ghiath Al-kadi , Erich Merlin
摘要： 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：US20180123515A1
公开(公告)日：2018-05-03
申请号：US15341629
申请日：2016-11-02
申请人： NXP B.V.
发明人： Jingfeng Ding , Helmut Kranabenter , Gernot Hueber
CPC分类号： H03D7/125 , G11C27/02 , G11C27/024 , H03D7/1441 , H03D7/1466 , H03D7/165 , H03D2200/0082 , H03D2200/0086 , H04B5/0025
摘要： Embodiments of a mixer of a Near field communication (NFC) receiver device and a method for operating a mixer of an NFC receiver device are disclosed. In an embodiment, a mixer of an NFC receiver device includes an input unit from which an input signal is received, a sample and hold circuit configured to sample the input signal and to store electrical charge based on the sampled input signal in order to generate a differential output signal, a control unit configured to switch the sample and hold circuit between different operational modes based on whether the input signal is a single-ended input signal or a differential input signal, and a differential output unit from which the differential output signal is output. Other embodiments are also described.
-
5.发明授权公开(公告)号：US10382098B2
公开(公告)日：2019-08-13
申请号：US15715044
申请日：2017-09-25
申请人： NXP B.V.
摘要： 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 detecting a system condition associated with the communications device and tuning a matching network of the communications device in response to the system condition, where the matching network includes a hybrid transformer that separates a receiver of the communications device from a transmitter of the communications device. 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
申请人： NXP B.V.
发明人： Jingfeng Ding , Ghiath Al-kadi , Erich Merlin
摘要： 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.
-
7.发明申请公开(公告)号：US20190020374A1
公开(公告)日：2019-01-17
申请号：US15646955
申请日：2017-07-11
申请人： NXP B.V.
发明人： Jingfeng Ding , Gernot Hueber , Stefan Mendel
摘要： A contactless communication device includes a receiver unit having differential input terminals for connecting to an antenna. The receiver unit is coupled to a transmitting device and receives an RF signal transmitted by the transmitting device. A first comparator is adapted to generate a first comparator output signal indicative of a relationship between a voltage at a positive input terminal of the receiver unit and a first reference voltage. A second comparator is adapted to generate a second comparator output signal indicative of a relationship between a voltage at a negative input terminal of the receiver unit and a second reference voltage. A first voltage regulation circuit is adapted to regulate the voltage at the positive input terminal in response to the first comparator output signal. A second voltage regulation circuit is adapted to regulate the voltage at the negative input terminal in response to the second comparator output signal.
-
公开(公告)号：US10516445B2
公开(公告)日：2019-12-24
申请号：US15950835
申请日：2018-04-11
申请人： NXP B.V.
摘要： A device for inductively coupled communications includes an NFC module for generating an electromagnetic carrier signal and modulating the carrier signal according to data to be transmitted, and a single ended antenna coupled to and driven by said NFC module with the modulated carrier signal. The device includes an RF front end coupled between said NFC module and said antenna. The RF front end includes an inductor coupled to a first terminal of a differential transmitter of said NFC module in the first transmitting path, and a capacitor coupled to a second terminal of said differential transmitter in the second transmitting path. The RF front end further includes a receiving path coupled to an input terminal of a single ended receiver of said NFC module. The RF front end does not use a balanced to unbalanced (Balun) transformer.
-
公开(公告)号：US20190319672A1
公开(公告)日：2019-10-17
申请号：US15950835
申请日：2018-04-11
申请人： NXP B.V.
摘要： A device for inductively coupled communications includes an NFC module for generating an electromagnetic carrier signal and modulating the carrier signal according to data to be transmitted, and a single ended antenna coupled to and driven by said NFC module with the modulated carrier signal. The device includes an RF front end coupled between said NFC module and said antenna. The RF front end includes an inductor coupled to a first terminal of a differential transmitter of said NFC module in the first transmitting path, and a capacitor coupled to a second terminal of said differential transmitter in the second transmitting path. The RF front end further includes a receiving path coupled to an input terminal of a single ended receiver of said NFC module. The RF front end does not use a balanced to unbalanced (Balun) transformer.
-
公开(公告)号：US20180359005A1
公开(公告)日：2018-12-13
申请号：US15621286
申请日：2017-06-13
申请人： NXP B.V.
CPC分类号： H04B5/0075 , H04B5/0031 , H04W88/06
摘要： A device for inductively coupled communications includes an NFC module for generating an electromagnetic carrier signal and modulating the carrier signal according to data to be transmitted, and an antenna circuit coupled to and driven by said NFC module with the modulated carrier signal. The device includes an RF front end coupled between said NFC module and said antenna circuit. The RF front end includes a balanced to unbalanced (Balun) transformer and a tuning capacitor. The Balun transformer has a first winding coupled to said NFC module via differential transmitter terminals of said NFC module and a second winding coupled to said tuning capacitor. A first terminal of said tuning capacitor is coupled to a receiving terminal of said NFC module. The Balun transformer and tuning capacitor provide a function of an electromagnetic compatibility (EMC) filter.
-
-
-
-
-
-
-
-
-
搜索结果
22 条记录 (耗时 0.012 秒)
