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Intel's Rezence deployment: Will the market follow suit?

Posted: 09 Jun 2014  Print Version  Bookmark and Share

Keywords:wireless  charging  Rezence  Intel 

Alliance for Wireless Power (A4WP) board member Intel revealed its plan to deploy the Rezence-branded magnetic resonance technology at silicon level at Computex in Taipei last week, wanting to provide OEMs and developers with a chipset solution to facilitate wireless charging of notebooks, tablets, smartphones and other portable electronics.

The chip giant demonstrated the technology embedded into a prototype notebook, tablet, smartphone and wireless headset. Each was lowered on to a table top which had an A4WP Rezence wireless charger fixed underneath it and began charging when it came within range (close to or on top of the table). This not only demonstrated that each could be charged by the technology, but also that multiple devices could be charged simultaneously and without having to be aligned in a very specific position.

Many of the wireless charging solutions we've seen commercially available to date have been based on tightly coupled solutions. In a typical solution, power is transferred between two coils, one of which sits in the wireless power receiver—which can be found for example in a mobile phone case or, built into a mobile phone—and one of which sits in a compatible transmitter or a wireless charger.

The two coils must be closely aligned for power to pass from the charger to the receiver in order to charge the device. In some implementations, alignment can sometimes be difficult to achieve (e.g., in designs where the device to be charged can easily slip out of charging position). Greater freedom of movement and alignment can be achieved using a multi-coil solution but these solutions often still restrict implementations where the user wishes to charge through the thickness of a desk or table.


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