Circuit unit and NFC device for realizing near field communication

The circuit unit with an NFC antenna, chip, and excitation circuit addresses the challenge of low power consumption and communication success rates in NFC devices by using energy from a radio frequency field to enhance device activation and communication efficiency.

JP2026025857AActive Publication Date: 2026-02-16ADVANCED NOVA TECH (SINGAPORE) HLDG PTE LTD
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Patent Information

Application Number
JP2025037739
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-08-02
Filing Date
2025-03-10
Publication Date
2026-02-16
Estimated Expiration
2045-03-10

AI Technical Summary

Technical Problem

Existing NFC devices face challenges in achieving high communication success rates while minimizing power consumption, particularly when operating in passive mode, which limits their widespread adoption in mobile devices.

Method used

A circuit unit comprising an NFC antenna, chip, and excitation circuit that utilizes energy from a radio frequency field to generate an excitation signal, enabling communication with a user terminal device and improving the success rate of near field wireless communication.

Benefits of technology

The solution enhances communication success rates with low power consumption, promoting the use of NFC devices in mobile terminals by ensuring efficient energy utilization and device activation.

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Abstract

To provide a circuit unit and a near field communication (NFC) device for achieving near field communication.SOLUTION: The circuit unit 300 includes an NFC antenna 301, an NFC chip 302, and an exciting circuit 303, where the NFC antenna 301 is connected to the NFC chip 302, and the NFC302 chip is connected to the exciting circuit 303. The NFC chip 302 is configured to obtain first energy when the NFC antenna 301 senses a radio frequency field of a user terminal device, and provide a part of the first energy to the excitation circuit 303, the excitation circuit 303 is configured to generate and emit an excitation signal by using the energy obtained from the NFC chip 302, and the excitation signal is configured to excite the user terminal device to communicate with a device including the circuit unit 300.SELECTED DRAWING: Figure 3
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