Fujitsu touts breakthrough in wireless charging technology

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Firm claims major improvement in design and development of signal receivers

Fujitsu has claimed a major breakthrough in wireless charging technology that could let manufacturers design charging systems in a fraction of the time currently required.

The firm explained that wireless charging is increasingly desirable, but that the use of magnetic resonance technology is highly complex as different devices require different levels of capacitance.

This means that each device needs a specifically developed receiver to stop stray capacitance being broadcast that could affect the link another device has with the magnetic transmitter.

Fujitsu said that it can take a full day's computing to work out the requirements for each device, a time-consuming and costly process.

However, the company's new developments could considerably shorten the work needed to design the type and placement of receivers.

The system uses a magnetic field analysis simulator and a special circuit simulator to design wireless charging systems for multiple transmitters and receivers.

The technology can automate the desired resonance requirements based on an assessment function which maximises the charging efficiency to further speed up the design process.

Suba Arunkumar, an analyst with Frost & Sullivan, believes that the development is significant as it comes just two months after the QI wireless standard was approved.

"Wireless charging technology is the next big thing, and Fujitsu's is the first development that adheres to the new standard," she said.

"Much like Wi-Fi is a publicly available commodity, so too will wireless charging become a technology that is available in numerous locations."

Fujitsu claimed that the technology could work in other areas that use portable electronics, and could even help in the development of mobile charging systems for electric cars.

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