Dielectric Resonator Wireless Power Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless power transmission methods, such as inductive coupling and radiative coupling, face limitations in efficiency and range, with inductive coupling being limited in range and radiative coupling being inefficient due to power being radiated in all directions.
Innovation Solution
A wireless power transmitting apparatus utilizing a dielectric resonator that generates evanescent waves in a predetermined direction, coupled with a loop antenna, to transmit power efficiently over both short and long distances by switching between evanescent wave and radiation modes based on distance from the receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If inductive coupling is used for wireless power transmission, then power transfer efficiency is improved within limited range, but transmission distance is restricted and requires accurate coil alignment
Solution Approach 1:
The patent combines two power transmission methods (inductive coupling and radiative coupling) into a single hybrid system. The inductive coupling component provides efficient short-range power transfer, while the radiative coupling component extends the transmission distance, allowing the system to overcome the limitations of each individual method and achieve both high efficiency and extended range.
2Length of moving object
If radiative coupling is used for wireless power transmission, then transmission distance is extended, but power transmission efficiency decreases due to power being radiated in all directions
Solution Approach 1:
The patent segments the power transmission function into two distinct components: inductive coupling for efficient short-range transmission and radiative coupling for extended range. This segmentation allows each component to operate in its optimal performance zone, with the inductive component minimizing energy loss at short distances and the radiative component providing necessary coverage at longer distances.
3Loss of energy
If inductive coupling is used for wireless power transmission, then power transfer efficiency is improved, but device alignment precision requirements increase
Solution Approach 1:
The radiative coupling component acts as an intermediary that reduces the alignment sensitivity of the overall system. By providing a complementary power transmission path that is less sensitive to misalignment, the radiative component allows the inductive coupling component to operate at optimal efficiency without requiring extremely precise alignment, thereby reducing manufacturing precision requirements.
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 solution achieves higher power transmission efficiency over short distances using evanescent waves and longer distances using radiation, enhancing overall wireless power transmission capabilities compared to existing methods.
Implementation Method 1
a dielectric resonator which generates evanescent waves in a predetermined direction in order to transmit power
Implementation Method 2
a loop antenna which is coupled to a surface of the dielectric resonator and supplies power to the dielectric resonator
Implementation Method 3
The dielectric resonator may perform power transmission by radiation in directions parallel to the top and bottom surfaces of the dielectric resonator
Data Source
AI summary
An apparatus for transmitting power wirelessly is provided. The apparatus comprises: a dielectric resonator which generates evanescent waves in a predetermined direction in order to transmit power; and a loop antenna which is coupled to a surface of the dielectric resonator and supplies power to the dielectric resonator. The dielectric resonator transmits power by means of evanescent waves generated in directions perpendicular to top and bottom surfaces of the dielectric resonator and by radiation in directions parallel to the top and bottom surfaces of the dielectric resonator. Accordingly, efficient power transmission over short and long distance ranges is possible.