3D Antenna Array Wireless Power Transmission
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Solution Overview
Problem
Conventional wireless charging systems are limited in their ability to transmit energy over meaningful distances and do not effectively manage power wave production or track devices in three-dimensional spaces, failing to adapt to user mobility and ensuring safe EMF exposure levels.
Innovation Solution
The system generates and transmits power waves that converge at predetermined locations to form pockets of energy, using sensor data and heat-map information to adjust power levels and direction, ensuring safe and efficient energy transfer while avoiding sensitive objects and adhering to regulatory EMF exposure standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional wireless charging systems use magnetic resonance to transmit power, then power can be transmitted without wired connection, but the device must be proximately located within a narrow magnetic field window
Solution Approach 1:
The patent transitions from conventional two-dimensional planar antenna arrangements to a three-dimensional antenna array configuration. Multiple antennas are positioned at different heights and spatial coordinates, enabling power transmission to devices at various locations and orientations in 3D space, thereby resolving the limitation of narrow magnetic field windows and improving user mobility flexibility
2Length of stationary object
If wireless power transmission uses high power output to extend transmission distance, then energy can reach remote devices, but EMF exposure limits may be exceeded
Solution Approach 1:
The system employs multiple antennas with independently controllable power output levels. Each antenna transmits at optimized local power levels to achieve cumulative power transmission over distance while maintaining EMF exposure within safety limits at any single location. The controller dynamically adjusts individual antenna power outputs based on real-time conditions
Solution Approach 2:
The wireless power transmission system is divided into multiple independent antenna segments. Instead of using a single high-power transmission source that would exceed EMF limits, the total power is segmented across multiple antennas, each contributing a portion of the total power while maintaining safe local exposure levels
3Device complexity
If conventional systems use fixed antenna configurations, then system design is simplified, but the system cannot dynamically track or adapt to moving devices in three-dimensional space
Solution Approach 1:
The system implements dynamic beamforming and phase shifting capabilities across the antenna array. The controller continuously adjusts the amplitude and phase of signals from individual antennas based on real-time device location and orientation data, enabling the power transmission field to dynamically track and adapt to moving devices in three-dimensional space while maintaining a fixed physical antenna structure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables efficient and adaptive wireless power transmission in three-dimensional spaces, ensuring safe energy transfer to devices while minimizing exposure to EMF levels, thus addressing the limitations of conventional systems.
Implementation Method 1
generates and transmits power waves that converge at predetermined locations to form pockets of energy
Implementation Method 2
determining, by a transmitter, a location within a transmission field to transmit one or more power waves based upon sensor data from a sensor indicating a region to avoid and heat-map data from a communications signal indicating a region containing a receiver
Data Source
AI summary
Embodiments disclosed herein may generate and transmit power waves that, as result of their physical waveform characteristics (e.g., frequency, amplitude, phase, gain, direction), converge at a predetermined location in a transmission field to generate a pocket of energy. Receivers associated with an electronic device being powered by the wireless charging system, may extract energy from these pockets of energy and then convert that energy into usable electric power for the electronic device associated with a receiver. The pockets of energy may manifest as a three-dimensional field (e.g., transmission field) where energy may be harvested by a receiver positioned within or nearby the pocket of energy.