Wearable Device Conductive Frame Loop Antenna
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Solution Overview
Problem
Conventional wearable electronic devices face challenges in providing stable RF performance due to limited internal space for antennas, which are often placed on flexible watchbands that vary in bending, affecting wireless transmission.
Innovation Solution
A wearable electronic device incorporates a conductive frame forming a loop antenna with defined current paths to operate in multiple frequency bands, integrating the antenna within the device's body and maintaining structural integrity while allowing for compact design and flexible wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna is placed on the watchband to save internal space, then the device can be made compact, but the bending of the watchband affects the RF performance of the antenna
Solution Approach 1:
The patent merges the antenna structure with the device body by using the conductive frame as the antenna element. The conductive frame forms a loop antenna that is integrated into the main body structure, eliminating the need for a separate watchband antenna. This combination ensures the antenna remains in a fixed, stable position that is not affected by watchband bending, while maintaining compact device dimensions.
2Adaptability or versatility
If the antenna element is disposed at available positions outside the body, then space inside the body is saved, but the bending varies with different users and affects antenna performance
Solution Approach 1:
The antenna is merged with the device body through the conductive frame, creating an integrated structure that maintains consistent geometric properties regardless of how the device is worn. The loop antenna formed by the conductive frame has defined current paths that are not affected by external bending variations, ensuring stable wireless transmission while accommodating different users and wear styles.
3Volume of moving object
If a compact design is used for the wearable device, then it can be worn easily, but the space for installing an antenna is limited
Solution Approach 1:
The conductive frame serves dual purposes: it provides the structural framework for the compact device body and simultaneously functions as the antenna element. By forming a loop antenna within the conductive frame structure, the design eliminates the need for separate antenna components, reducing overall device volume while maintaining manufacturability through integrated construction.
Solution Approach 2:
The conductive frame is designed to perform multiple functions: it provides structural support for the device, serves as the antenna element for wireless communication, and establishes current paths for RF operation. This multi-functionality allows the compact device to achieve both small size and effective antenna performance without requiring additional space for separate antenna installation.
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 solution enhances wireless transmission stability by embedding a double-loop antenna within the device's body, reducing physical space requirements and minimizing the impact of wear-induced bending on antenna performance.
Implementation Method 1
The conductive frame includes a feeding point and at least a grounding point to form a first current path and a second current path. Furthermore, the conductive frame forms a loop antenna via the first current path and the second current path to operate in a first band and a second band, respectively.
Implementation Method 2
The physiological sensor is electrically connected to the conductive frame and the conductive back cover, and the physiological sensor senses a physiological signal via the conductive frame and the conductive back cover.
Data Source
AI summary
A wearable electronic device includes a body and a wearing element. The body includes a conductive frame. The conductive frame includes a feeding point and at least one grounding point to form a first current path and a second current path. Furthermore, the conductive frame forms a loop antenna via the first current path and the second current path, respectively, so as to operate in a first band and a second band. The wearing element is connected to the body.