Resonance Charging, Airfuel Alliance Wireless Power Transfer

Resonance Power and Charging with A4WP Rezence Wireless Power

Resonance Charging Solutions for Wireless Power Transfer

IDT develops ICs to facilitate wireless power transfer in magnetic resonance-based applications (also known as a resonant transformer, resonant-inductive coupling, or resonance charging). Magnetic resonance solutions transfer power between two inductors that are tuned to the same natural resonant frequency. Resonance power technology allows power to be transferred wirelessly over a distance with flexibility in relative orientation and positioning.

IDT Helps Define the Airfuel™ Alliance Wireless Power Standard

IDT is a sponsor (board) member of the Airfuel Alliance, an independently operated, not-for-profit organization dedicated to building a global wireless charging ecosystem using Airfuel technology. The Airfuel Alliance and its member companies are working to create a wireless power transfer (WPT) ecosystem that uses Airfuel technology to deliver a superior consumer experience and a more flexible solution for industrial designers.

Airfuel is based on the concept of spatial freedom, which extends wireless power applications into almost any mobile device or surface. Unlike other technologies, Airfuel offers a number of unique benefits, such as:

  • Multi-device charging: the ability to charge multiple devices at the same time
  • Superior charging range: enhanced flexibility in the distance the portable device can be from the charging source
  • Bluetooth communication: uses existing Bluetooth Smart technology, minimizing hardware requirements, and making Smart Charging Zones possible.

Airfuel Wireless Power ICs

IDT is working cooperatively with prominent industry players to develop next-generation resonance charging solutions that comply to the Airfuel Alliance wireless power standard. IDT’s products enable the development of magnetic resonance-based wireless charging solutions that can be embedded in almost any surface or mobile device. This includes retail environments, airports, automobiles, and home and office furniture. Airfuel technology is being integrated into other devices such as laptops and portable chargers, creating the world’s first truly mobile wireless charging power sources.

About Magnetic Resonance Power Technology

Magnetic resonance power technology is the near-field wireless transmission of electrical energy between two coils that are tuned to resonate at the same frequency. Based on the principles of electromagnetic coupling, resonance-based chargers inject an oscillating current into a highly resonant coil to create an oscillating electromagnetic field. A second coil with the same resonant frequency receives power from the electromagnetic field and converts it back into electrical current that can be used to power and charge a portable device. Resonance charging offers unique advantages in spatial freedom, enabling the transmitter (resonance charger) to be separated from the receiver (portable device) by several inches or more.