Self-Resonant Ring Resonators for Wireless Power Efficiency
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Solution Overview
Problem
Existing wireless power transmission systems using radio waves in certain frequency ranges can cause health problems for humans and do not efficiently manage impedance mismatching, leading to reduced power transmission efficiency.
Innovation Solution
A self-resonant apparatus with ring resonators featuring metamaterial properties, including split-ring resonators connected in parallel to capacitors, and a magnetic rode, which operates in a specific frequency range and is designed to optimize impedance matching and power transmission efficiency through a combination of parallel and series capacitors and inductive elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If wireless power transmission systems operate in certain frequency ranges, then power transmission capability is improved, but health problems for humans occur
Solution Approach 1:
The patent changes the operating frequency parameter from traditional GHz range to 1-100 MHz range, and adjusts the resonant frequency of the ring resonators to match this band. This parameter change enables effective power transmission while operating in a safer frequency range that does not cause health problems.
Solution Approach 2:
The system uses tunable resonant circuits with variable capacitors and inductors to dynamically adjust the operating frequency and impedance matching. This allows the system to adapt to different transmission distances and loads while maintaining optimal efficiency in the safer frequency range.
2Device complexity
If conventional antennas are used for wireless power transmission, then system simplicity is maintained, but impedance mismatching occurs leading to reduced power transmission efficiency
Solution Approach 1:
The patent introduces ring resonators as intermediary components between the power source and the transmission medium. These resonators act as impedance transformation devices that match the impedance between different stages of the power transmission system, minimizing reflections and maximizing power transfer efficiency.
Solution Approach 2:
The system uses composite structures combining metal strips, dielectric layers, and capacitive elements to create the ring resonators. This composite design enables simultaneous achievement of impedance matching, resonant frequency control, and compact form factor, improving efficiency without excessive complexity.
3Loss of energy
If ring resonators with metamaterial features are implemented, then impedance matching and power transmission efficiency are improved, but device complexity increases
Solution Approach 1:
The ring resonator structure is segmented into discrete components including metal strips, dielectric layers, and surface-mounted capacitors. This segmentation allows for modular manufacturing using standard PCB and SMT technologies, reducing overall device complexity while maintaining the metamaterial resonant properties needed for high efficiency.
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 enhances power transmission efficiency and reduces health risks by optimizing impedance matching and operating within safer frequency ranges, achieving a high quality factor and efficient energy transfer.
Implementation Method 1
ring resonators, wherein the ring resonators may be represented by a combination having metamaterial features
Implementation Method 2
wireless power transmission system
Implementation Method 3
A dielectric permittivity of the dielectric layer may correspond to a value in a range of 2 ∈r to 20 ∈r
Implementation Method 4
a combination may include split-ring resonators (SRRs) connected in parallel to capacitors
Implementation Method 5
The parallel resonant LC circuit may include an inductive element and a capacitive element
Data Source
AI summary
Provided is a self-resonant apparatus in relation to electric and radio technologies, and more particularly, to a wireless power transmission system, the self-resonant apparatus including ring resonators. Here, the ring resonators may be represented by a combination having metamaterial features, the combination may include split-ring resonators (SRRs) connected in parallel to capacitors, a front surface and a rear surface of each of the SRRs may be connected to be twisted in an alternating pattern, and each SRR may be executed as a metal strip mounted on a dielectric layer and connected to a neighboring SRR by a series capacitor.