Adaptive Antenna Polarization for Efficient Wireless Power Transfer
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Solution Overview
Problem
Existing wireless power transmission systems face challenges in efficiently delivering power in multipath environments due to polarization mismatch between transmitter and receiver antennas, leading to reduced efficiency and orientation dependence.
Innovation Solution
A polarization adaptive wireless power transmission system dynamically configures antenna polarization to match the polarization information of received beacon signals, ensuring efficient power delivery regardless of orientation and multipath reflections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional wireless power transmission systems are used, then power delivery is possible, but power transfer efficiency is reduced due to polarization mismatch in multipath environments
Solution Approach 1:
The system dynamically adjusts the polarization state of transmit antennas based on received beacon signals. The polarization configuration changes in real-time to match the receiver's orientation and the multipath environment, transitioning from static to dynamic polarization adaptation to maximize power transfer efficiency
Solution Approach 2:
The system changes the polarization parameters (orientation, ellipticity, handedness) of the transmit antennas to match the receiver characteristics. By adjusting these parameters based on beacon signal analysis, the system optimizes the electromagnetic field alignment between transmitter and receiver, reducing energy loss from polarization mismatch
2Reliability
If fixed polarization antennas are used, then device complexity is reduced, but performance varies with orientation and multipath reflections
Solution Approach 1:
The system uses beacon signals transmitted by the receiver as feedback to determine the optimal polarization configuration. The transmit antennas analyze the received beacon signals to infer receiver orientation and multipath characteristics, then adjust their polarization accordingly, creating a closed-loop feedback system that maintains consistent performance across different orientations
Solution Approach 2:
The transmit antenna system is designed to perform multiple functions: transmitting power, receiving beacon signals for polarization detection, and adapting to various receiver orientations. This multi-functionality allows a single antenna system to handle diverse scenarios without requiring multiple specialized antenna configurations
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 enhances power transfer efficiency by matching the polarization of the wireless power transmission system with that of the receiver, optimizing energy delivery in complex environments and maintaining performance across various orientations.
Implementation Method 1
the wireless power transmission system transmits a power signal to the wireless device
Implementation Method 2
the wireless device receives the power signal and determines whether to charge a battery of the wireless device with the power signal
Data Source
AI summary
The technology described herein relates to polarization adaptive wireless power transmission systems. In an implementation, a wireless power transmission system is described. The wireless power transmission system includes an antenna array and control circuitry operatively coupled to the antenna array. The control circuitry is configured to determine polarization information of a beacon signal received from a client device at multiple antennas of the antenna array. The beacon signal is transmitted by a client device in a wireless power delivery environment. The control circuitry is further configured to configure polarization information associated with each of the multiple antennas to match the polarization information determined at respective antennas of the multiple antennas. The present technology enables different wireless power receiver clients to have different polarizations. The wireless power transmission system can efficiently send power to the client devices by matching their polarization.