Array Antenna Phase Inversion for Faster Wireless Power Feeding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional power feeding devices struggle to promptly set phases for maximizing received power at the power receiving device.
Innovation Solution
A power feeding system with an array antenna and a power transmission control unit that controls the phases of power transmission signals from multiple antennas, alternating between fixed and inverted phases to optimize power reception at a specific device, while using random beamforming for other devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional power feeding devices radiate feeding power by performing first radiation and second radiation, then power can be transmitted to power receiving devices, but the phases cannot be promptly set to increase received power
Solution Approach 1:
The patent applies inversion by transmitting signals with inverted phases (180 degrees opposite) to compare and determine the optimal phase. The power feeding apparatus transmits a first signal with a predetermined phase and a second signal with an inverted phase, then compares the received power levels to identify which phase configuration maximizes power transfer to the receiving device.
Solution Approach 2:
The patent changes the phase parameter of transmitted signals to optimize power reception. By systematically varying the phase parameter between different transmission signals (comparing predetermined phase versus inverted phase), the system identifies the optimal phase setting that maximizes received power at the power receiving device.
2Power
If phases are optimized for one power receiving device, then received power increases for that device, but power transmission to other devices may be affected
Solution Approach 1:
The patent segments the power transmission process into distinct phases: a first power transmission process for phase optimization targeting a specific power receiving device, and a second power transmission process for normal operation. This segmentation allows the system to optimize for individual devices when needed while maintaining capability for multi-device transmission.
Solution Approach 2:
The patent implements dynamic phase adjustment where the power feeding apparatus can adaptively change transmission phases based on real-time conditions. The system dynamically selects between using predetermined phases or inverted phases depending on which configuration yields better power reception, allowing flexible adaptation to different operational scenarios and device positions.
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 system effectively sets phases to increase received power at the power receiving device, ensuring efficient power transmission and charging, particularly for devices requiring higher power.
Implementation Method 1
an array antenna including a plurality of antennas configured to transmit power
Implementation Method 2
a power receiving device configured to receive power transmission signals transmitted from the power feeding apparatus
Data Source
AI summary
A power feeding system includes a power transmission control circuit configured to select one of a plurality of first antennas included in a plurality of antennas, and while transmitting a first power transmission signal having a fixed power transmission phase for a non-selected first antenna among the plurality of first antennas, to perform, while selecting the plurality of first antennas one by one, both a first power transmission process of transmitting a first power transmission signal having a predetermined phase from a selected first antenna, and a second power transmission process of transmitting a first power transmission signal having an inverted phase obtained by inverting the predetermined phase from the selected first antenna.