NFC technology can also be used to wirelessly charge devices


NFC forum announces an extension of Wireless Charging specifications, providing a way to use the NFC receiver when charging devices wirelessly.

Appeared as a feature reserved for premium range smartphone products, the wireless charging function will soon become as common as the fingerprint sensor, devices that omit this feature being avoided by buyers.

Welcome to the popularization of wireless charging technologies comes from the NFC Forum, the organization created to standardize the Near Field Communication device ecosystem by announcing the approval of a new set of specifications for wireless charging, which provides for the use of NFC antenna for charging devices.

The new upload option is based on a feature of NFC technology, designed to wirelessly power NFC tags pasted on various objects. Even if it was intended for another purpose, the system is not very different from the dedicated wireless charging technology, the main difference being the maximum power that can be transmitted by the NFC antenna present on the devices that support this technology. Obviously, you will not be able to charge your mobile phone via NFC, but you could get satisfactory results with other low-power accessories, such as headphones and fitness bracelet.

The main advantage of NFC technology is the much more compact hardware than we find in dedicated technologies for wireless charging, the NFC antenna can be applied as a sticker inside the housing of small devices, with negligible additional costs.

Turning to the disadvantages, in addition to the low loading speed, the radius of the NFC connection, limited to about 4 cm, must also be taken into account. This means that in order to charge the fitness bracelet using a compatible phone, the gadget must actually be placed on the phone case, as close as possible to the place where the NFC antenna is located.

Upgrading to Wireless Charging Specification 2.0 (WLC 2.0) the loading speed increases at 1W, enough to charge wireless headphones in a few tens of minutes. For comparison, even the slowest implementations of reverse-wireless charging support charging powers of about 4.5W, but using specialized hardware for wireless charging. Instead, using the NFC antenna does not require anything extra on the hardware side, the functionality can be activated through a software update.


Source: Go4IT by www.go4it.ro.

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