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Xiaomi’s Mi Air Charge can wirelessly charge your device from a distance



Mi Air Charge Source: Xiaomi

No company have ever commercialize any form of wireless charger at a distance till now. Xiaomi have been making buzz now in the tech world after the company has shared some details on its new Mi Air Charge technology on its official blog.


This technology is capable of delivering 5W of power to a single device over a distance of a couple of meters from the “self-developed isolated charging pile”. This charging pile has 5 phase interference antennas to accurately find out your mobile device.



Mi Air Charge Source: Xiaomi

After determination process, a phase control array composed of 144 antennas directionally transmits millimeter-wide waves via beamforming. The receiving device has a miniaturized antenna array with a built-in “beacon antenna” and “receiving antenna array.” The former broadcasts the position information while the latter is a 14 antenna array that converts the millimeter wave signal into electrical energy through the rectifier circuit.


The Mi Air Charge is just a tech demo said by the company, so it’s not clear if the company will be able to overcome the implementational and structural market problems faced by other vendors that have shown off no-contact wireless charging prototypes. There are also health concerns, and there’s no doubt that if this technology ever makes it to market, it’ll be heavily scrutinized by regulatory authorities.



If successful, this technology will be a game-changer for smart home products would eventually be compatible with smartwatches, fitness bands, and other wearables.


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