Phased Array Wireless Power Transfer for Long-Range Beam Collimation
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Solution Overview
Problem
Existing power transmission methods, including both wired and wireless electromagnetic solutions, face challenges such as high installation costs, geographical limitations, aesthetic concerns, and inefficiencies in long-range power transfer due to energy divergence.
Innovation Solution
A long-range wireless power transfer system utilizing a phased array antenna, phase correcting devices, and rectifying antennas to maintain a collimated electromagnetic beam, enhancing energy transfer efficiency and range through phase and amplitude control, and using metasurfaces for minimal power loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If electromagnetic waves are transmitted over long distance wirelessly, then power transfer capability is improved, but energy loss increases due to beam divergence
Solution Approach 1:
The patent applies parameter changes by using phased array technology to dynamically control the phase and amplitude of electromagnetic waves from individual antenna elements. This enables the beam to maintain collimation over long distances through constructive interference, significantly reducing energy loss while extending transmission distance
Solution Approach 2:
The transmitting antenna is divided into multiple antenna elements that can be independently controlled. Each element contributes to the overall beam formation, allowing precise phase and amplitude control to maintain beam collimation and reduce divergence-related energy loss over long distances
2Length of moving object
If phased array antenna with phase correcting device is used, then beam collimation and transmission range are improved, but device complexity increases
Solution Approach 1:
The patent introduces phase correcting devices as intermediary components between the antenna elements and free space. These devices act as mediators that adjust the phase of electromagnetic waves from individual elements to achieve constructive interference and maintain beam collimation, extending the effective transmission range while managing system complexity through modular design
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 achieves efficient, long-range power transfer with minimal energy loss, overcoming geographical limitations and reducing installation costs compared to traditional methods.
Implementation Method 1
convert the input electric power into electromagnetic energy, and radiate the electromagnetic energy into free space as a directional beam that is a collimated or substantially collimated beam
Implementation Method 2
perform a phase correcting operation on the directional beam, the phase correcting operation being maintaining the directional beam as the collimated or substantially collimated beam and increasing a range to which the directional beam is maintained as the collimated or substantially collimated beam
Implementation Method 3
the rectifying antenna configured to receive the directional beam from the at least one phase correcting device and convert the electromagnetic energy into electricity
Data Source
AI summary
A long-range wireless power transfer system 100 is disclosed. The system 100 comprises at least a transmitting antenna 110 that is configured to receive electric power from a power source as an input, convert the input electric power into electromagnetic energy, and radiate the electromagnetic energy into free space as a directional beam that is a collimated or substantially collimated beam. The rectifying antenna 130 is positioned or configured to be positioned at a distance from the transmitting antenna 110. The rectifying antenna 130 is configured to receive the directional beam and convert the electromagnetic energy into electricity. In certain embodiments, the system 100 utilise one or more phase correcting devices 120, 122 to maintain the directional beam as the collimated beam and to increase a range to which the directional beam is maintained as the collimated or substantially collimated beam.