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Docket #: S15-332

Wireless Power Transfer

Stanford researchers developed a wireless power transfer mechanism that will charge devices while on the move, or in use. The mechanism uses a parity-time symmetric circuit incorporating a nonlinear gain saturation element. Efficiency and power transfer are constant over varying range without tuning - enabling wireless 'on the go' charging. Consumer, medical, and industrial electronics will be more robust, reliable, convenient, and safer through the elimination of cables, wires and battery replacement.

Stage of Research - Prototype
Researchers have verified theory with experiments on a radio frequency circuit. Research is ongoing.

Applications

  • Wireless power transfer to electric vehicles while in use.
  • Wireless power transfer to portable electronics – devices can be wirelessly charged while in use.
    • Ideal for devices used in harsh or hazardous environments.

Advantages

  • Constant transferred power level over a range.
  • Convenient charging on the go could increase EV effective driving range and EV adoption.
  • Increased mobility and safety for patients with implantable medical devices, neurostimulators.
  • Handheld medical instruments, and diagnostic equipment can be charged on the go, eliminating need for cables, and stationary charging.
  • More convenient, reliable, automatic charging and direct wireless power for: mobile phones, handheld devices, printers, displays, robots, cordless tools and instruments.
  • Increased design flexibility and robustness for thinner, waterproof devices - eliminates failure prone wiring, complex docking and battery replacement.

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