Modular wireless power source consisting of injection-locked rf generators

Abstract

A wireless power system includes a magnetic resonance wireless power source with multiple coupled LC resonators, each driven by a separate radiofrequency (RF) generator. The system is modular, allowing resonators to be added, subtracted, or relocated. Each RF generator is configured to sense the phases of other RF generators and adjust its phase to maintain a constant phase difference. Each RF generator includes a Class-E amplifier driven by an injection-locked oscillator and a low-pass filter outputting a current sine-wave. The RF generator senses the phase of the RF current of other RF generators through an induced voltage and adjusts its phase based on a summed voltage derived from a voltage signal and a current signal. The system maintains frequency-locking in the presence of environmental detuning by adjusting a variable capacitor.

Dependencies are inferred from the claim text.