Wireless Power Resonator Using Metamaterial Zeroth-Order Mode
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Solution Overview
Problem
Wireless power transmission resonators require physical size adjustments based on frequency, leading to impractical large sizes at low frequencies and inefficiencies due to frequency-dependent magnetic permeability and permittivity, which limits their practical application.
Innovation Solution
Design of a wireless power resonator using a metamaterial structure with a transmission line, conductors, and capacitors that form a loop structure, allowing for zeroth-order resonance independent of physical size, with a matcher to adjust impedance and enhance power transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a resonator using a coil structure is used for wireless power transmission, then power transmission can be achieved, but the physical size must be changed based on frequency, resulting in impractically large sizes at low frequencies
Solution Approach 1:
The patent applies parameter changes by introducing a transformation circuit that converts between series and parallel configurations of the resonant circuit. This allows the resonator to operate at different frequencies without changing its physical dimensions. The transformation circuit changes the electrical parameters (impedance, resonance frequency) while maintaining the same physical structure, thereby resolving the contradiction between power transmission capability and physical size.
Solution Approach 2:
The patent implements dynamics by making the resonant circuit configuration changeable through the transformation circuit. The circuit can dynamically switch between series and parallel configurations, allowing adaptation to different operating conditions and frequencies without physical modification. This dynamic reconfiguration enables the same physical resonator to achieve different resonance frequencies, solving the size-frequency contradiction.
2Volume of moving object
If the resonator physical size is reduced for high frequency operation, then compact design is achieved, but power transmission efficiency decreases due to frequency-dependent magnetic permeability and permittivity
Solution Approach 1:
The transformation circuit changes the electrical parameters of the resonant circuit, specifically the impedance and resonance frequency, without altering the physical size. By converting between series and parallel configurations, the circuit maintains optimal power transmission efficiency across different operating conditions while keeping the resonator compact. This parameter transformation compensates for the frequency-dependent effects on magnetic permeability and permittivity.
3Adaptability or versatility
If a transformation circuit is added to convert between series and parallel configurations, then frequency adaptability is improved, but device complexity increases
Solution Approach 1:
The transformation circuit is segmented into distinct functional components: a switching mechanism for changing configuration, and a coupling network for transforming between series and parallel states. This segmentation allows each component to perform its specific function efficiently, reducing overall complexity while maintaining frequency adaptability. The modular structure makes the system easier to analyze, design, and implement.
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 resonator achieves efficient power transmission with a high Q-factor and reduced physical size, independent of resonant frequency, enhancing power transfer efficiency and practicality across various frequency ranges.
Implementation Method 1
One of the wireless power transmission technologies may use a resonance characteristic of radio frequency (RF) devices
Implementation Method 2
at least one capacitor inserted between the first signal conducting portion and the second signal conducting portion
Data Source
AI summary
Provided is a wireless power resonator. The wireless power resonator, including a transmission line and a capacitor, may form a loop structure, and may additionally include a matcher to determine an impedance of the wireless power resonator.