Wireless Charging Without Cables
Japanese firm Fujitsu shows off their new battery charging technology. This is a wireless charging technology without cables, which is made possible by using magnetic resonance.
This system can be used at a few meters distance and allowed to create recharging hotspots. This technology is expected to be available before 2012.
Theoretically, this system is safe for human beings around the recharging area, because the emitted energy will only resonate at the same frequency. This technology uses magnetic resonance to send electric waves through the air into the charger and device. Fujitsu claims this system can recharge the device, 1 / 150 times faster than normal.
The demand of this technology keeps rising due to lots of new power thirst portable devices like iPhone and iPad released to the market.
This technology bridges the integration of a compact wireless recharging function for mobile phones, and enable sustainable portable device recharging without limits. Many currently available recharging systems rely on electromagnetic induction of 2 coils. This system is not efficient and wastes lots of energy.
This differs from Fujitsu system which is based on magnetic resonance system where power can be transmitted wirelessly between two coils and change it at the same frequency.
Based on early conducted tests, this technology can work at a 15 cm distance but the firm claims that this technology can later be used at several meters distance. But of course the farther the device, the less energy will be transmitted.
This system is quite similar to systems used in Witricity United States (U.S.), which also uses magnetic resonance to transmit electricity to several devices located few meters away.
Details of this technology will be presented at a conference in Osaka, Japan.
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