Antenna Phase Control for Selective Wireless Power Feeding
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Solution Overview
Problem
Conventional feed devices struggle to simultaneously power a specific power receiver requiring a large amount of received power and other power receivers efficiently.
Innovation Solution
A feed device that controls the phases of power transmission signals from multiple antennas to selectively power a specific power receiver through an antenna subset while using random beamforming for other receivers, maintaining phase relations to optimize power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional feed devices transmit power to multiple power receivers simultaneously, then the overall power coverage is improved, but the received power for specific power receivers requiring large amounts of power is insufficient
Solution Approach 1:
The patent segments the antenna group into multiple antenna subsets, where each subset is dedicated to serving a specific power receiver. This segmentation allows the system to concentrate power from specific antenna subsets to specific power receivers that require large amounts of power, while other antenna subsets continue to serve other power receivers. The controller manages multiple antenna subsets independently, enabling simultaneous power transmission to multiple power receivers with different power requirements.
Solution Approach 2:
The patent applies local quality by assigning different antenna subsets with different characteristics to different power receivers based on their specific power requirements. Each antenna subset is optimized for serving particular power receivers, creating localized power transmission paths. This allows the system to provide high concentrated power to specific power receivers while maintaining adequate power levels for other receivers through their designated antenna subsets.
2Power
If the feed device concentrates power on a specific power receiver, then the received power for that receiver is improved, but the power available for other power receivers decreases
Solution Approach 1:
The patent divides the antenna group into multiple antenna subsets, with each subset dedicated to serving a specific power receiver. This segmentation enables the system to concentrate power from specific antenna subsets to specific power receivers without significantly reducing power availability for other receivers, as other antenna subsets continue to transmit power to their designated receivers simultaneously.
Solution Approach 2:
The antenna subsets serve multiple functions: they can be dedicated to specific power receivers for concentrated power transmission, or the controller can dynamically allocate different antenna subsets to different power receivers based on real-time power requirements. This multi-functionality allows the system to adapt to varying power demands while maintaining the ability to power multiple receivers simultaneously.
3Productivity
If the feed device uses multiple antenna subsets for different power receivers, then the power distribution efficiency is improved, but the device complexity increases
Solution Approach 1:
The patent segments the antenna group into multiple antenna subsets and assigns each subset to serve specific power receivers. This segmentation simplifies the control architecture by creating independent, manageable units that can be controlled separately. The controller manages each antenna subset independently, which reduces the overall control complexity compared to managing all antennas as a single group, while still achieving efficient power distribution to multiple receivers.
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
The device effectively powers both high-power and low-power receivers by concentrating power on the specific receiver and distributing it uniformly among others, ensuring efficient energy transfer.
Implementation Method 1
multiple first antennas, which are located around each of multiple first power receivers, among multiple antennas from which power is configured to be transmitted
Implementation Method 2
the phases sequentially change while maintaining a phase relation between the power transmission signals, so as to match the phases of the power transmission signals that the one first power receiver, among the multiple first power receivers, receives from the multiple first antennas
Implementation Method 3
in the first radiation, the fed power is wirelessly radiated in the direction of the power receiver detected by the first detector
Data Source
AI summary
A feed device repeats a frame including multiple subframes to control phases of power transmission signals from multiple first antennas located around each of multiple first power receivers, such that the phases sequentially change while maintaining a phase relation between the power transmission signals, so as to match the phases of the power transmission signals that one of the multiple first power receivers receives from the multiple first antennas. The feed device sequentially changes the phases of power transmission signals that are transmitted from one or more second antennas.