Wireless Power Reception With Real-Time RF and DC Impedance Tuning
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Solution Overview
Problem
Current wireless power reception systems face inefficiencies in handling arbitrary RF input fields and varying power loads, leading to reflection coefficients and variance in current and voltage, which can limit the effective reception and provision of power.
Innovation Solution
The system employs dynamic impedance matching and DC impedance conversion to tune the input impedance of antennas and output impedance of RF-DC converters, allowing for efficient power reception and provision by adjusting impedance in real-time to match arbitrary RF sources and loads, using a combination of resonators, impedance tuning networks, power measurement modules, and control algorithms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If dynamic impedance matching is implemented to handle arbitrary RF input fields, then power reception efficiency is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic impedance matching by making the impedance of the resonant circuit adjustable in real-time. The impedance matching network includes variable capacitors or inductors that can be tuned to match the impedance of arbitrary RF sources, thereby maximizing power transfer efficiency across different operating conditions.
Solution Approach 2:
The system changes electrical parameters (impedance values) of the resonant circuit dynamically. By adjusting capacitance or inductance values in the impedance matching network, the system adapts to different RF sources and load conditions, resolving the contradiction between handling arbitrary inputs and maintaining simplicity.
2Productivity
If impedance tuning networks are used to match arbitrary RF sources and loads, then power provision efficiency is improved, but device complexity increases
Solution Approach 1:
The impedance tuning network employs dynamic adjustment capabilities through electronically controllable impedance elements. This allows the system to optimize power delivery to varying DC loads by real-time impedance matching, improving productivity while managing complexity through electronic control rather than mechanical adjustments.
Solution Approach 2:
The system incorporates feedback mechanisms that monitor the actual power delivery conditions and adjust the impedance tuning parameters accordingly. This closed-loop control optimizes power provision efficiency while automatically adapting to load changes, reducing the need for complex manual tuning.
3Loss of energy
If dynamic impedance matching is implemented to reduce reflection coefficients, then power reception efficiency is improved, but device complexity increases
Solution Approach 1:
The patent utilizes variable electrical parameters in the impedance matching network to minimize reflection coefficients. By dynamically adjusting capacitance or inductance values, the system achieves optimal impedance matching with RF sources, thereby reducing reflected power and improving reception 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
This approach enables efficient power reception from arbitrary RF sources and provision to arbitrary DC loads, reducing reflection coefficients and variance in current and voltage, thereby increasing overall system efficiency and allowing for the reception of power that would otherwise be lost.
Implementation Method 1
The system employs dynamic impedance matching and DC impedance conversion to tune the input impedance of antennas and output impedance of RF-DC converters, allowing for efficient power reception and provision by adjusting impedance in real-time to match arbitrary RF sources and loads, using a combination of resonators, impedance tuning networks, power measurement modules, and control algorithms.
Implementation Method 2
The system employs dynamic impedance matching and DC impedance conversion to tune the input impedance of antennas and output impedance of RF-DC converters, allowing for efficient power reception and provision by adjusting impedance in real-time to match arbitrary RF sources and loads.
Implementation Method 3
The system employs dynamic impedance matching and DC impedance conversion to tune the input impedance of antennas and output impedance of RF-DC converters, allowing for efficient power reception and provision by adjusting impedance in real-time to match arbitrary RF sources and loads.
Data Source
AI summary
A system for wireless power reception, preferably including one or more: antennas, dynamic impedance matches, RF-DC converters, DC impedance converters, and/or DC power outputs. A method for wireless power reception, preferably including: receiving power wirelessly at an antenna, dynamically adjusting an input impedance of a dynamic impedance match coupled to the antenna, and/or delivering the power to a load.