In-Ear Hearing Aid Antenna Handle for Compact RF Efficiency
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Solution Overview
Problem
In-the-ear hearing aids face challenges in integrating a compact and efficient antenna element due to space constraints, while maintaining a visually discreet and unobtrusive design.
Innovation Solution
An in-the-ear hearing aid with a housing and an arcuate antenna element protruding from the housing, featuring at least one helical conductor strand connected to a transmitting and receiving unit, designed as a double helix for improved efficiency and compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna element is positioned outside the housing and integrated into the handle element, then space inside the housing is saved, but the handle element protrudes from the user's ear which is considered visually discreet
Solution Approach 1:
The antenna element is designed as an arcuate element that follows the curved contour of the handle element and ear structure. This curved design allows the antenna to be integrated into the handle element's shape, making it less visually conspicuous while still positioned outside the housing for space efficiency.
2Device complexity
If a conventional antenna design is used, then the structure is simple, but the antenna length is insufficient for efficient RF signal transmission in the limited space
Solution Approach 1:
The antenna element is configured as an arcuate structure extending in three-dimensional space rather than a straight line. By utilizing the curved path along the handle element, the antenna achieves an effective length of at least 28mm within the limited space available, improving RF signal transmission without requiring a longer straight-line dimension.
Solution Approach 2:
The antenna element is integrated within or along the handle element structure, nesting the antenna function within the existing mechanical component. This allows the antenna to utilize the handle element's spatial envelope, achieving sufficient antenna length while maintaining a compact overall form factor.
3Volume of moving object
If the antenna element is made compact, then the form factor is reduced, but the antenna efficiency may be compromised
Solution Approach 1:
The arcuate configuration of the antenna element provides an optimized current distribution path that maintains antenna efficiency in a compact form. The curved geometry allows the antenna to achieve resonant conditions and efficient radiation patterns while occupying minimal volume within the hearing aid housing and handle element.
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 design achieves a high-efficiency, compact antenna with visually appealing and discreet operation, supporting RF signal transmission and reception, while maintaining a small form factor.
Implementation Method 1
The arcuate antenna element has at least one helical conductor strand, which is designed to transmit or receive a signal, in particular an RF (radio frequency) signal
Data Source
Figure 1~2
Figure 3
AI summary
The in-the-ear hearing aid (2) comprises a housing (4) with a transmitting and receiving unit (12) arranged therein, as well as an arcuate antenna element (20) protruding from the housing (4) and forming at least part of a handle element (22) by means of which the hearing aid (2) can be removed from the ear by the user. The antenna element (20) comprises at least one helical conductor strand (30A, 30B) which serves to transmit or receive a signal and which is connected to the transmitting and receiving unit (12) arranged in the housing (4). This configuration creates an efficient, discrete antenna element.