Wearables with Near Field Communication

Abstract

The invention discloses a wearable device with a near-field communication function. The wearable device includes a PCB carrying a near field communication circuit and a metal ring body; the metal ring body is provided with a feed-in point and at least one grounding point; and the near-field communication circuit includes a near-field communication chip, a balun circuit and a near-field matching circuit, wherein the near-field communication chip is connected with the balun circuit, the balun circuit is connected with the near-field matching circuit, the near-field matching circuit is connected with the feed-in point, and the balun circuit is connected with the grounding points. According to the wearable device of the invention, one part of the wearable device, namely, the metal ring body, can be adopted as an NFC (near-field communication) antenna body to externally excite a magnetic field, and therefore, cost can be decreased, and FPC materials and ferrites used by a traditional NFC antenna can be eliminated; by means of the metal outer ring, an NFC performance can be improved, and the available space in the wearable device can be increased; and the metal outer ring is not required to be slotted, and therefore, processing difficulty can be reduced, and yield can be improved.

Description

technical field [0001] The present invention relates to a wearable device, in particular to a wearable device with near field communication. Background technique [0002] Near Field Communication (NFC), also known as short-range wireless communication, is a short-range high-frequency wireless communication technology that can realize electronic identification or allow non-contact point-to-point data transmission between electronic devices. With the continuous development and improvement in the past ten years, NFC technology has been loaded in many electronic products, such as becoming the standard configuration of most brands of mobile phones, and gradually applied in wearable devices such as smart watches. NFC is derived from RFID. Compared with it, it has the characteristics of short communication distance, low energy consumption, wide bandwidth, safety and reliability, etc. It plays a huge role in the fields of access control, public transportation, and fast face-to-face ...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a wearable device with near-field communication, which aims to solve the disadvantages of traditional NFC antennas in wearable devices with metal outer rings. Inhibition by the function of conventional NFC antennas, etc.

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