3D Power Receiving Antenna for Long-Range Wireless Charging
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Solution Overview
Problem
Existing power receiving antennas are limited by the need for proximity to a power transmitting device and lack flexibility in accommodating various device shapes, leading to inefficiencies in wireless power transmission.
Innovation Solution
A power receiving antenna design comprising a first and second conductive plate connected by a feeder and a conductive member, allowing for efficient wireless power reception and compatibility with diverse device shapes, even at a distance from the power source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional power receiving antenna is used, then the device can receive wireless power, but the power transmitting device must be located close to the power receiving antenna
Solution Approach 1:
The patent transitions from a conventional planar antenna structure to a three-dimensional configuration by stacking multiple conductive plates (first conductive plate, second conductive plate, third conductive plate) at different heights. This vertical dimensionality increase allows the antenna to effectively receive power over longer distances from the transmitting device, resolving the contradiction between reception efficiency and distance limitation.
2Reliability
If the power receiving antenna is designed for specific shapes, then it can achieve good power reception, but it cannot accommodate various device shapes
Solution Approach 1:
The patent creates a universal power receiving antenna structure that can be applied to various device shapes and sizes. The modular design with multiple conductive plates connected by insulating members and feeders can be scaled and configured to fit different form factors, achieving both good power reception and broad adaptability across diverse IoT devices.
Solution Approach 2:
The antenna is divided into separate functional segments: first conductive plate, second conductive plate, third conductive plate, insulating members, and feeders. This segmentation allows each component to be independently optimized and assembled in different configurations to suit various device shapes while maintaining effective power reception performance.
3Reliability
If the power receiving antenna size is increased, then power reception efficiency improves, but the device size increases
Solution Approach 1:
Instead of increasing antenna size in the horizontal plane, the patent utilizes the vertical dimension by stacking multiple conductive plates at different heights. This allows the antenna to achieve improved power reception efficiency through increased effective aperture in three dimensions while maintaining a compact footprint, thus resolving the contradiction between reception efficiency and physical size.
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 antenna achieves high radiation efficiency and omnidirectional power reception, enabling efficient wireless power feeding to IoT devices with minimal size and shape constraints.
Implementation Method 1
a power receiving antenna for receiving electric power fed wirelessly
Data Source
AI summary
A power receiving antenna is provided, which is capable of efficiently receiving electric power from a distant power transmitting device, and allows a change of its size within a certain range. A power receiving antenna used for wireless power feeding includes: a first conductive plate; a second conductive plate that faces the first conductive plate; a feeder connecting a first end portion of the first conductive plate and a second end portion of the second conductive plate facing the first end portion; and a conductive member connecting a first other end portion opposite to the first end portion and a second other end portion opposite to the second end portion.