Scientists use radio signals for excess charging smartphone




Scientists at Ohio State University have found a way to use the useless scattered radio signals through a smart phone to recharge the battery. The battery could go up as thirty percent longer if a connection is active.

The system was developed by researchers Chi Chih Chen and Robert Lee of the Ohio State University. They make use of a technique which is not new in itself: the recovery of energy from radio signals is sometimes applied in order to provide small sensors with power. Smartphones consume much more power, but may nevertheless benefit: they can work longer on a battery charge.

The invention captures a portion of the radio signals transmitted by a phone again, and converts it into electricity which the battery is recharged. This involves alternating with a very high frequency, while electronics operates on DC power. The system, therefore, has a small rectifier to convert AC voltage to be converted into direct current.

When the system would absorb too much of the emitted signals, suffers the quality of the connection underneath. Smartphones transmit radio signals in all directions to reach the nearest Wi-Fi router or telephone pole, causing part of the signal is distributed useless. According to Lee is lost as 97 percent of the signal. Therefore, the scientists developed a system that would automatically absorb the maximum amount of radio signals without causing problems for the connection.

According to the researchers, their discovery makes sure the battery to thirty percent longer battery life after a full charge. The system does not only receive signals, or if the phone without a connection.

The researchers have now Nikola Labs created to bring the technology to market. They announced earlier in June to come up with a Kickstarter campaign to fund further development. Initially, the invention will be incorporated into a 99 dollar costing iPhone case, that all must be delivered in September. Eventually, they hope to find a manufacturer that wants to incorporate the technology in a smartphone. The researchers also see applications for other mobile devices such as wearables, sensors and medical devices.

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