公开(公告)号：US20240063847A1

公开(公告)日：2024-02-22

申请号：US18452905

申请日：2023-08-21

Applicant: NXP B.V.

Inventor： Manoj Kurvathodil ,  Julia Ziegerhofer

IPC: H04B5/02 ,  G01R19/02

CPC classification number: H04B5/02 ,  G01R19/02

Abstract: In accordance with a first aspect of the present disclosure, a near field communication (NFC) device is provided, comprising: an NFC transceiver configured to communicate with an external NFC device and to apply at least one transceiver parameter when communicating with the external NFC device; a calibration unit operatively coupled to the NFC transceiver and configured to calibrate the NFC transceiver; wherein the calibration unit is configured to calibrate the NFC transceiver by causing the NFC transceiver to apply different values of the transceiver parameter, measuring a noise level in the NFC transceiver for each applied value of the transceiver parameter, and selecting an optimal value from the applied values of the transceiver parameter in dependence on the noise level measured for each applied value. In accordance with a second aspect of the present disclosure, a corresponding method of operating an NFC device is conceived.

公开(公告)号：US20240204743A1

公开(公告)日：2024-06-20

申请号：US18082352

申请日：2022-12-15

Applicant: NXP B.V.

Inventor： Erich Merlin ,  Manoj Kurvathodil

IPC: H03H7/38 ,  H03H7/42 ,  H04B1/40 ,  H04B5/00

CPC classification number: H03H7/38 ,  H03H7/42 ,  H04B1/40 ,  H04B5/0031

Abstract: In one example, the present disclosure includes a circuit-based apparatus including a resonance tank circuit, a signal source, and a single-ended circuit. The signal source provides a plurality of complementary signals (e.g., differential signals) for processing by the resonance tank circuit where the complementary signals are combined to a signal at a node for presentation to the single-ended circuit (e.g., antenna or receiver). For example, the resonance tank circuit, which has a resonance frequency set for a transfer of power to the load and which may be impedance matched to the single-ended circuit, converts the complementary signals to the node for carrying the signal to the single-ended circuit.