Hearing Device Antenna Bandwidth Adaptation
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Solution Overview
Problem
Hearing devices face challenges in establishing multiple type wireless communication links due to restricted constructional space and high electric power consumption, requiring flexible adaptation to different communication link types while maintaining signal accuracy and power efficiency.
Innovation Solution
The method involves an antenna arrangement with a transfer characteristic magnitude greater than a predetermined value in a specific spectral band, which is adapted to the type of signal transmission, using a passive antenna unit and adjusting the transfer characteristic to optimize signal-to-noise ratio and power consumption, allowing for automatic recognition and adaptation of signal types such as audio, speech, music, and wide or narrow band transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the antenna arrangement uses a fixed bandwidth design, then the device structure is simple, but it cannot adapt to different signal transmission types (audio, speech, music, wide/narrow band)
Solution Approach 1:
The patent applies dynamics by making the antenna arrangement's bandwidth adjustable rather than fixed. The antenna arrangement includes a resonant circuit with variable components (such as variable capacitors or inductors) that allow the bandwidth to be dynamically changed according to the signal transmission type, enabling adaptation from narrow band (audio) to wide band (music) modes.
Solution Approach 2:
The patent changes the bandwidth parameter of the antenna arrangement based on the detected signal type. By modifying electrical parameters (capacitance, inductance values) in the resonant circuit, the system optimizes the transfer characteristic magnitude for different signal types, achieving efficient transmission for audio, speech, music, and other signal categories.
2Adaptability or versatility
If the antenna arrangement operates with wide bandwidth to accommodate all signal types, then adaptability is improved, but power consumption increases
Solution Approach 1:
The patent applies partial action by activating only the necessary bandwidth portion for each signal type rather than maintaining full wide bandwidth operation continuously. The antenna arrangement adjusts its operational bandwidth to match the specific requirements of the current signal (e.g., narrow bandwidth for audio, wider for music), reducing unnecessary energy consumption while maintaining support for multiple signal types.
Solution Approach 2:
The system dynamically adjusts the antenna arrangement's operational bandwidth based on real-time signal detection and transmission requirements. This dynamic adaptation ensures that the antenna operates at optimal power efficiency for each signal type, avoiding the excessive power consumption associated with maintaining wide bandwidth for all possible signal types simultaneously.
3Measurement precision
If the antenna arrangement is optimized for high signal-to-noise ratio, then transmission accuracy is improved, but the device becomes more complex
Solution Approach 1:
The patent optimizes the signal-to-noise ratio by adjusting the antenna arrangement's transfer characteristic parameters (impedance, resonant frequency, bandwidth) to match the specific signal type being transmitted. This parameter optimization enhances signal quality without requiring complex additional signal processing stages, as the antenna itself is adapted to the signal characteristics.
Solution Approach 2:
The antenna arrangement performs self-optimization by automatically detecting the signal type and adjusting its own parameters accordingly. This self-adaptive capability improves signal-to-noise ratio without requiring complex external signal processing systems, as the antenna arrangement itself handles the optimization through its variable components and control mechanism.
4Volume of moving object
If the hearing device is made more compact to fit behind the ear, then wearability is improved, but the space for antenna arrangement is restricted
Solution Approach 1:
The patent applies nesting by integrating the antenna arrangement components within the compact hearing device structure. The resonant circuit elements (capacitors, inductors) are miniaturized and nested within the device housing, allowing the antenna to maintain its functionality while fitting within the space-constrained behind-the-ear form factor.
Solution Approach 2:
The antenna arrangement uses parameter changes (variable capacitance, inductance values) to maintain effective electrical length and resonant frequency within a compact physical structure. This allows the antenna to achieve proper transmission characteristics without requiring large physical dimensions, thus accommodating the space restrictions of compact hearing devices.
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 and accurate wireless communication links in hearing devices by optimizing bandwidth adaptation, reducing power consumption, and accommodating various signal types, thus enhancing signal transmission quality and device compactness.
Implementation Method 1
an antenna arrangement converting input electromagnetic radiation into wire bound electric communication signals and vice versa
Data Source
AI summary
So as to adapt an antenna arrangement (13) for RF-signal transmission in a hearing device (5) to different needs of different types of signal-transmission, the bandwidth BW of the antenna arrangement (13) is manually (M) and/or automatically (A) adjusted.