IoT DEVICES POWERED BY RADIO ENERGY

The AirFuel Alliance is a global coalition of innovative companies that are committed to a world where we can power up without plugging in. They achieve this by developing standards for leading-edge wireless power technologies and accelerating their adoption. AirFuel Resonant and RF universal standards are driving the path forward by enabling rapid charging of multiple devices simultaneously and free of cords.

The Alliance provides the technical requirements, specifications, and guidelines that members can use to ensure wireless charging products (based on the same technology) interoperate with one another and that wireless power technology is high quality, safe and reliable.

The Alliance and its members also work to promote wireless charging and raise worldwide awareness of its many benefits for consumer and commercial use. 

The AirFuel Alliance represents a coalition of people and companies that share a common mission to advance wireless power.

AirFuel represents the standards and technologies that AirFuel Alliance members have agreed to adopt to standardize wireless technologies for the benefit of consumers and the industry as a whole. When talking about the collective, refer to the AirFuel Alliance. When speaking about AirFuel standards and technologies, simply use AirFuel.

Any company interested in wireless charging and committed to working on interoperability and open standards is encouraged to join.

Both Inductive and Resonant technologies use coils of wire to transfer power while RF uses radio frequency. There are also differences in the transmission frequencies and communication protocols, which translate into variations in spatial freedom to support multiple use cases. For example, Resonant coils are tuned for better efficiency and enable spatial freedom while Inductive requires the device to be attached to the charge.

• RF is the newest and most exciting Airfuel technology.Airfuel RF uses a radio frequency transmitter and a receiver embedded within the device (not a coil) to pick up RF energy and convert it to power. RF provides low power at distances ranging from a few centimeters to a few meters, delivering true spatial freedom. This means it works well with wearables, IoT sensors, ESLs, or other devices that need the broadest spatial freedom.

  Atmosic Energy Harvesting SoC's, such as the ATM3 and ATM33 series devices include an embedded RF Energy Harvester designed to support the most efficient implementation of the Airfuel RF specification available.

• Other Airfuel Technologies
  • • Inductive charging uses closely coupled coils to deliver the
      transfer of a magnetic field over a short distance (up to 20mm). It works well for devices that can be placed directly on top of the charging source (i.e., with no spatial freedom) such as a smartphone on top of a charging pad.
    • Resonant charging utilizes uniquely designed coils to allow limited movement while charging. With resonant charging, any enabled surface can power a device, up to 50mm in height and from a wide surface area. This lets you transfer power while not requiring any exact orientation between the device and charger.