Wireless Charging through Furniture via AirFuel Resonant

Ambient Wireless Charging via AirFuel Resonant

AirFuel™Resonant wireless charging technology has been a long time coming, but it’s recently been released for commercial use. AirFuel Resonant is not the wireless charging that we have had for the past few years; the majority of wireless charging units to now use inductive technology to charge devices.

Resonant Charging (Source: Witricity)

Magnetic resonance charging. Application example: A transmitter is under a table powered with house current and covers a wide area. The receiver is in the smartphone. (Source: Witricity)

AirFuel Resonant offers:

  • Spatial freedom; it does not require a specific position in a cradle or on a mat.

  • Charging from inches away, even through furniture, backpacks, and back pockets.

  • Several devices can charge at once on the same charging surface.

According to a press release by the AirFuel Alliance, the “smart city” of Shenzhen, China will provide their fuel resonant “wireless charging service in a variety of public venues including the airport, subway stations, hotels, restaurants, and shopping malls, making it easy for Chinese consumers and businesses to enjoy a world without wires.

If you are at all familiar with wireless charging technology, you might be wondering where AirFuel originated. The AirFuel Alliance is a merged alliance of wireless technology represented by the Power Matters Alliance (PMA) and the Alliance for Wireless Power (A4WP), each of which had their own wireless charging technology. See Table 1 for information regarding the technologies’ former names.

Airfuel vs. Qi Chart

The Wireless Power Consortium (WPC) owns the Qi standard for inductive wireless charging and has been out for some time, as the standard was released in 2009. AirFuel Alliance’s president and chairman Ron Resnick claims that there are already over 4,000 resonant-based public charging spots worldwide. The technology allows so-called “ambient charging” through backpacks, purses and pockets in surrounding infrastructure for AirFuel Resonant-enabled phones.

The market leader in wireless charging might be Qi for the moment, even though Samsung has hedged its bets by including both Qi and AirFuel inductive wireless charging in their latest phones. The devices that power the chargers include transmitters and receivers from Texas Instruments that are Qi-compliant and Nordic Semiconductor provides transmitters and receivers for both AirFuel Inductive and Resonant wireless charging. The new Dell Latitude 7285, a tablet-laptop hybrid can charge wirelessly from an AirFuel Resonant mat from WiTricity. Nordic will unveil its AirFuel Resonant SoC, the nRF52832, used to implement an AirFuel Power Receive Unit (PRU) at CES ASIA June 7 – 9, 2017. Last year, CES Asia had over 33,000 attendees.