Elastomer Sleeve Antenna for Wireless Earphone RF Efficiency
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Solution Overview
Problem
The challenge is to design a wireless earphone antenna that maintains performance despite the increasing miniaturization of earphones, which limits available space and results in RF signal absorption by the human body, leading to reduced efficiency.
Innovation Solution
An elastomer sleeve with an integrated antenna extending from the earphone body to a sleeve wing portion, utilizing a magnet for connection to the earphone body's PCB, allowing for a larger antenna structure and reduced interference from the human body, enabling optimal RF performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the earphone size is reduced to meet ergonomic requirements, then the portability and comfort are improved, but the available space for antenna design is reduced and RF efficiency deteriorates
Solution Approach 1:
The patent extends the antenna along the longitudinal axis of the earphone by integrating it into the elastomer sleeve that protrudes from the earphone body. This dimensional extension allows the antenna to achieve sufficient length for optimal RF performance while keeping the main earphone body compact and ergonomic.
Solution Approach 2:
The elastomer sleeve acts as an intermediary structure that houses and protects the antenna. The sleeve material provides electromagnetic shielding and isolation, reducing signal interference from the human body and other components while maintaining the compact earphone design.
2Ease of operation
If the earphone enters deeper into the ear canal to improve fit, then the ergonomic performance is improved, but the RF energy absorption by the human body increases and efficiency deteriorates
Solution Approach 1:
The elastomer sleeve serves as an intermediary barrier between the antenna and the human body. This sleeve material provides electromagnetic isolation that reduces the absorption of RF energy by the human body, thereby maintaining transmission efficiency even when the earphone is positioned deeply in the ear canal.
Solution Approach 2:
The flexible elastomer sleeve creates a physical and electromagnetic barrier between the antenna and the user's body. This thin film structure effectively reduces RF energy absorption while maintaining the earphone's ergonomic fit and comfort.
3Reliability
If more free space is provided for the antenna to improve RF efficiency, then the antenna performance is improved, but the earphone size increases and portability deteriorates
Solution Approach 1:
The patent utilizes the longitudinal dimension by extending the antenna through the elastomer sleeve that protrudes from the earphone body. This allows the antenna to achieve sufficient length for optimal RF performance without increasing the cross-sectional dimensions of the earphone, thereby maintaining portability.
Solution Approach 2:
The earphone system is segmented into the main earphone body and the protruding elastomer sleeve containing the antenna. This segmentation allows the antenna to occupy space external to the main body, providing sufficient antenna length for optimal performance while keeping the main earphone unit compact and portable.
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 design provides a wireless earphone antenna with improved RF efficiency by creating additional space for the antenna and minimizing signal absorption, achieving optimal performance even in compact earphone sizes.
Implementation Method 1
the elastomer sleeve includes a magnet connected to its connecting portion, and the magnet facilitates the connection between the connecting portion of the antenna and the connecting portion of the earphone body
Data Source
AI summary
Disclosed are an elastomer sleeve for a wireless earphone and a wireless earphone. The elastomer sleeve for the wireless earphone includes: a sleeve body defining a space for accommodating an earphone body of the wireless earphone; a sleeve wing portion formed integrally with the sleeve body and extending outward from the sleeve body; and an antenna formed in the elastomer sleeve and extending from the sleeve body to the sleeve wing portion. The wireless earphone includes an earphone body and one or more elastomer sleeves for detachably connecting to the earphone body and partially enclosing the earphone body.