Murata Offers Sample of New Wireless Power Transmission System

Dec 18, 2013
Tetsuo Nozawa, Nikkei Electronics
The demonstration system for wireless power transmission based on the direct current resonance method in operation. Electricity is being transmitted from the power transmitting module (bottom) to three power receiving modules via a relay antenna. Its power source is two AA batteries.
The demonstration system for wireless power transmission based on the direct current resonance method in operation. Electricity is being transmitted from the power transmitting module (bottom) to three power receiving modules via a relay antenna. Its power source is two AA batteries.
[Click to enlarge image]
The power receiving module and an antenna
The power receiving module and an antenna
[Click to enlarge image]

Murata Manufacturing Co Ltd started to provide a demonstration system for wireless power transmission based on the company's "direct current resonance" method.

The demonstration system is provided to the member companies of Wireless Power Management Consortium (WPM-c) for free. The announcement was made by WPM-c.

Wireless power transmission based on the direct current resonance method enables to drastically reduce the size of a system (See related article). The power transmitting and receiving modules of the demonstration system measure 10 x 22 x 2.5mm and 8 x 13 x 1.7mm, respectively. It transmits 0.5W of power with a frequency of about 20MHz. The power transmitting module can be powered via USB2.0, etc.

As a product, Murata considers providing a system that can transmit 3, 10 or 30W of power with a frequency of 6.78MHz.