Impedance Matching for Hearing Prostheses Load Conditions
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Solution Overview
Problem
Existing hearing prostheses face inefficiencies in data and power coupling due to varying load conditions, leading to sub-optimal performance across different operating modes.
Innovation Solution
The system employs impedance matching capabilities with multiple stages of correction, including coarse and fine-tuning adjustments, using impedance transformation circuits and duty cycle adjustments to optimize electrical signal transmission for different load conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-stage impedance matching is used, then the device complexity is reduced, but the efficiency of data and power transfer deteriorates under varying load conditions
Solution Approach 1:
The impedance matching network is divided into multiple stages (coarse correction stage and fine-tuning stage) that operate sequentially. Each stage handles a specific portion of the impedance adjustment range, allowing the system to maintain low complexity while achieving high efficiency across varying load conditions through staged correction.
2Loss of energy
If impedance transformation circuits are added for fine-tuning, then the data and power transfer efficiency is improved, but the device complexity increases
Solution Approach 1:
The system employs dynamic switching between different impedance matching configurations based on detected load conditions. The controller selectively activates coarse correction and fine-tuning stages according to the operating mode, enabling the circuit to adapt its complexity level to match the required precision for current conditions.
Solution Approach 2:
The system automatically detects load conditions and self-adjusts the impedance matching configuration without external intervention. The controller monitors electrical parameters and autonomously selects the appropriate matching stage activation, reducing the need for manual configuration or complex external control systems.
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 enhances the efficiency of data and power transfer between external and implanted devices in hearing prostheses, improving performance across various operating modes without adding complexity or size.
Implementation Method 1
a transformer circuit (126) having a primary winding coupled to the secondary coil (114) and a secondary winding coupled to the rectifier circuit
Data Source
AI summary
The present disclosure relates generally to devices, systems, and methods for supporting different load conditions in a data/power link. In one example, a device includes a transformer that has a first tap with a first turns ratio and a second tap with a second turns ratio. The device further includes electronics and circuitry. The circuitry is configured to selectively couple the electronics to the first tap of the transformer for a first application and to couple the electronics to the second tap of the transformer for a second application.