RF Transmitter Phase Control for Wireless Power Pockets
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Solution Overview
Problem
Current wireless power transmission methods are inefficient and cumbersome, requiring direct alignment of devices with transmitters, and often result in wasteful energy distribution due to distance attenuation and interference, making it difficult to charge portable electronic devices without physical connection to a power source.
Innovation Solution
A transmitter that creates a three-dimensional pocket of energy using RF signal waves, located and directed towards receivers using communication protocols like Bluetooth, allowing for efficient wireless charging of multiple devices without physical connection, by manipulating wave phase and amplitude to form constructive interference patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless power transmission is performed over distance, then power can be transmitted to devices without physical connection, but energy is wasted due to distance attenuation
Solution Approach 1:
The patent transitions from traditional omnidirectional or limited-direction wireless power transmission to three-dimensional spatial control of power waves. By manipulating the phase and amplitude of signals across multiple antennas, the system creates focused energy pockets in specific three-dimensional locations, enabling precise power delivery without excessive energy dispersion in other directions or distances.
Solution Approach 2:
The system implements localized power transmission by creating concentrated energy pockets at specific spatial coordinates rather than broadcasting power uniformly in all directions. Each antenna element contributes to forming localized high-energy regions where receivers are positioned, ensuring energy is delivered precisely where needed while minimizing waste in surrounding areas.
2Ease of operation
If traditional wireless power transmission is used, then devices can be charged wirelessly, but direct alignment with transmitters is required
Solution Approach 1:
The system dynamically adjusts the phase and amplitude of power waves transmitted by each antenna element based on real-time receiver positions and environmental conditions. This dynamic control allows the formation of stable energy pockets that track and accommodate receiver movements, eliminating the need for precise manual alignment while maintaining efficient power transfer.
Solution Approach 2:
The patent incorporates feedback mechanisms where the transmitter receives information about receiver positions and power reception quality. This feedback enables the system to automatically adjust transmission parameters, forming and maintaining energy pockets at the correct locations without requiring user intervention for alignment, thus simplifying operation while managing system complexity.
3Productivity
If power waves are transmitted in multiple directions, then multiple devices can be charged simultaneously, but interference occurs reducing efficiency
Solution Approach 1:
The patent segments the power transmission space into distinct three-dimensional pockets, each dedicated to serving a specific receiver. By dividing the overall transmission volume into separate controlled regions, the system can simultaneously charge multiple devices without interference, as each pocket is independently formed and maintained with precise spatial boundaries.
Solution Approach 2:
The system changes the parameters (phase and amplitude) of power waves transmitted by different antenna elements to create distinct spatial patterns for each energy pocket. By independently controlling these parameters for each receiver, the system forms multiple non-interfering power regions, enabling simultaneous charging of multiple devices while minimizing energy loss from interference.
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
Enables efficient and flexible wireless power transmission to multiple devices, reducing energy wastage and eliminating the need for direct alignment, allowing continuous operation of electronic devices during charging.
Implementation Method 1
manipulating wave phase and amplitude to form constructive interference patterns
Implementation Method 2
receivers... receive power from the pocket of energy
Data Source
AI summary
The embodiments described herein include a transmitter that transmits a power transmission signal (e.g., radio frequency (RF) signal waves) to create a three-dimensional pocket of energy. At least one receiver can be connected to or integrated into electronic devices and receive power from the pocket of energy. The transmitter can locate the at least one receiver in a three-dimensional space using a communication medium (e.g., Bluetooth technology). The transmitter generates a waveform to create a pocket of energy around each of the at least one receiver. The transmitter uses an algorithm to direct, focus, and control the waveform in three dimensions. The receiver can convert the transmission signals (e.g., RF signals) into electricity for powering an electronic device. Accordingly, the embodiments for wireless power transmission can allow powering and charging a plurality of electrical devices without wires.