Wireless Power Transmission Beamforming for Extended Sensor Charging

The patent implements dynamic RF beam steering that adapts the transmission beam direction and focus based on receiver position and channel conditions. The system dynamically adjusts phase and amplitude weights across antenna elements to steer beams toward moving receivers, enabling extended charging distances while maintaining efficient power transfer. This dynamic adaptation resolves the contradiction by allowing the system to achieve long-distance charging (beyond 25 meters) through intelligent beam control rather than simply increasing transmitter power.

The patent changes key transmission parameters including phase differences, amplitude weights, and frequency characteristics to optimize power delivery at extended distances. By adjusting these parameters based on feedback information and channel state, the system achieves effective charging beyond 5 meters without requiring prohibitively high transmitter power. The parameter optimization resolves the contradiction between extended range and system complexity.

The patent concentrates transmitted power into focused RF beams directed precisely at receiver locations using beamforming techniques. Instead of omnidirectional high-power transmission that would exceed safety regulations, the system creates localized high-intensity regions only where receivers are positioned. This spatial concentration of energy enables extended charging distances while maintaining safety compliance in surrounding areas, as the high power is confined to specific directional beams rather than being dispersed throughout the environment.

The system employs feedback mechanisms where receivers transmit information about their position, power reception status, and channel conditions back to the transmitter. The transmitter uses this feedback to continuously optimize beam direction, focus, and power level, ensuring safe operation while maintaining effective charging at extended distances. The feedback loop allows the system to adapt to changing conditions and prevent excessive power exposure, resolving the safety contradiction.