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：US20180123515A1

公开(公告)日：2018-05-03

申请号：US15341629

申请日：2016-11-02

Applicant: NXP B.V.

Inventor： Jingfeng Ding ,  Helmut Kranabenter ,  Gernot Hueber

IPC: H03D7/12 ,  G11C27/02 ,  H04B5/00

CPC classification number: H03D7/125 ,  G11C27/02 ,  G11C27/024 ,  H03D7/1441 ,  H03D7/1466 ,  H03D7/165 ,  H03D2200/0082 ,  H03D2200/0086 ,  H04B5/0025

Abstract: 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.

公开(公告)号：US09918280B1

公开(公告)日：2018-03-13

申请号：US15346506

申请日：2016-11-08

Applicant: NXP B.V.

Inventor： Gernot Hueber ,  Ian Thomas Macnamara

IPC: H04W52/18 ,  H04B5/00 ,  H04B17/318

CPC classification number: H04B5/0031 ,  H04B5/0081 ,  H04W52/226 ,  H04W52/245 ,  H04W52/246 ,  H04W52/52

Abstract: Embodiments of methods and systems for automatic power control (APC) in a communications device that communicates via inductive coupling are described. In an embodiment, a method for APC in a communications device that communicates via inductive coupling involves storing a universal APC table for the communications device, adjusting the universal APC table in response to at least one system parameter, and controlling a transmission configuration of the communications device based on the adjusted APC table. Other embodiments are also described.

公开(公告)号：US10735115B2

公开(公告)日：2020-08-04

申请号：US16050929

申请日：2018-07-31

Applicant: NXP B.V.

Inventor： Gernot Hueber ,  Ian Thomas Macnamara

IPC: H04B17/21 ,  G01R31/28 ,  G06F7/48 ,  G06F7/544 ,  H03M1/10 ,  H04B1/00

Abstract: This specification discloses methods and systems for implementing a chip integrated scope (i.e., chip scope (CS)), which is a feature that allows a user to scope RF signals (internally and externally to the DUT (device under test)), by using the RF receive path (including amplifier, filter, ADC, DSP) to capture and store signal traces. In some embodiments, this specification discloses methods and systems to enhance the resolution and accuracy of these signal traces by using raw and correction data for gain/phase compensation of gain/phase impairments introduced in the Rx (receiver) path. In some embodiments, the correction data is generated from one or more of the following: simulation data, characterization data, production test data.

公开(公告)号：US10680572B2

公开(公告)日：2020-06-09

申请号：US15692594

申请日：2017-08-31

Applicant: NXP B.V.

Inventor： Gernot Hueber ,  Leonhard Kormann ,  Ian Thomas Macnamara

IPC: H03H7/38 ,  H03H7/01 ,  H04L25/49 ,  G01R27/02 ,  H04L25/02 ,  H03H11/12 ,  H03H7/46

Abstract: Aspects of the disclosure are directed to auto-sweeping impedance-matching circuitry that matches an impedance of an RF antenna. As may be implemented in accordance with one or more embodiments, a transmitter that is configured and arranged to transmit signals to remote devices via the RF antenna, is used to communicate a plurality of test signals to the impedance-matching circuitry, with each test signal having a designated frequency and/or test signal pattern that is different than the designated frequency and/or test signal pattern of the other test signals. A characteristic of each of the test signals as passed through the impedance-matching circuitry is detected. For each of the test signals generated for the auto-sweep, the detected characteristic is compared to an expected characteristic for the test signal, and an output indicative of compliance of the impedance-matching circuitry with a design specification is generated and transmitted in response to the comparison.

公开(公告)号：US10659009B2

公开(公告)日：2020-05-19

申请号：US15224933

申请日：2016-08-01

Applicant: NXP B.V.

Inventor： Gernot Hueber ,  Ian Thomas Macnamara

IPC: H03K3/00 ,  H03H11/24 ,  H03H7/25 ,  H03K5/00

Abstract: Embodiments of methods and systems for attenuator phase compensation are described. In an embodiment, a method for attenuator phase compensation involves determining a phase compensation value for an attenuator based on an attenuation configuration of the attenuator and performing phase compensation according to the phase compensation value to maintain a constant phase response.

公开(公告)号：US20200036412A1

公开(公告)日：2020-01-30

申请号：US16049436

申请日：2018-07-30

Applicant: NXP B.V.

Inventor： Gernot Hueber ,  Ian Thomas Macnamara

IPC: H04B5/00 ,  H04B5/02 ,  H04B17/12

Abstract: This specification discloses methods and systems for controlling a NFC (near field communication) transmitter output with enhanced accuracy. This is achieved by first doing a device and/or system level calibration of the Tx (transmitter) by testing at the device and/or system level. Then using the testing results to generate a set of Tx calibration data, which will be used by a Tx control unit to control the Tx outputs (such as Tx output power, Tx output voltage, Tx output current, etc.) with enhanced accuracy. In some embodiments, the Tx control unit controls the Tx output with enhanced accuracy by using the Tx calibration data to tune one or more of the following: (i) Tx supply, (ii) Tx driver, (iii) matching network.

公开(公告)号：US10516445B2

公开(公告)日：2019-12-24

申请号：US15950835

申请日：2018-04-11

Applicant: NXP B.V.

Inventor： Gernot Hueber ,  Jingfeng Ding ,  Ian Thomas Macnamara

IPC: H04B5/00 ,  H04B7/00 ,  H04W4/80 ,  H01Q1/22

Abstract: 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

Applicant: NXP B.V.

Inventor： Gernot Hueber ,  Jingfeng Ding ,  Ian Thomas Macnamara

IPC: H04B5/00 ,  H01Q1/22 ,  H04W4/80

Abstract: 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

Applicant: NXP B.V.

Inventor： Jingfeng Ding ,  Gernot Hueber ,  Ian Thomas Macnamara

IPC: H04B5/00 ,  H04W88/06

CPC classification number: H04B5/0075 ,  H04B5/0031 ,  H04W88/06

Abstract: 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.