Wearable Antenna Housing With RF Window and Isolated Rear Cover
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Solution Overview
Problem
Existing wearable electronic devices face challenges in integrating additional functionalities without increasing size and weight, while maintaining durability and performance.
Innovation Solution
The wearable electronic device incorporates a sidewall housing with a radio-frequency transparent window, a metal rear cover, and a non-conductive split to electrically isolate the rear cover from the sidewall housing, along with an antenna resonator and conductor to enhance antenna performance and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional functionalities and components are integrated into wearable devices, then device functionality is improved, but device size and weight increase
Solution Approach 1:
The patent combines multiple antenna functions (primary antenna and signal-restoring antenna) into a single integrated structure where the rear cover serves dual purposes as both a structural component and an antenna element. The conductor integrates electrical coupling between components, merging structural and electrical functions into unified elements that reduce overall device weight while maintaining enhanced functionality.
Solution Approach 2:
The rear cover is designed to serve multiple functions simultaneously: it acts as a structural housing component, a radiator for the primary antenna, and a ground plane for the signal-restoring antenna. This multi-functionality eliminates the need for separate components, thereby improving device functionality without increasing weight.
2Adaptability or versatility
If additional functionalities and components are integrated into wearable devices, then device functionality is improved, but device size increases
Solution Approach 1:
The signal-restoring antenna is nested within the same spatial structure as the primary antenna, with both antennas sharing the rear cover and internal volume. The conductor routes electrical connections through existing structural pathways, nesting multiple functional elements within the device's compact form factor to avoid increasing overall size.
Solution Approach 2:
The patent utilizes the third dimension (depth/thickness) of the rear cover to accommodate multiple antenna elements and conductors. By arranging antenna resonators and conductors in the internal volume rather than expanding the external footprint, the design enhances functionality while maintaining a compact device size.
3Reliability
If a conductive sidewall housing and conductive rear cover are used, then device durability and antenna performance are improved, but electrical interference and signal distortion occur
Solution Approach 1:
The conductive housing is segmented into electrically isolated sections using non-conductive material at the seams. This segmentation allows each conductive portion (sidewall housing and rear cover) to function as an effective antenna element while preventing unwanted electrical coupling and interference between sections, thereby maintaining antenna performance without harmful interference.
Solution Approach 2:
A non-conductive split acts as an intermediary element between the conductive sidewall housing and conductive rear cover. This intermediary electrically isolates the two conductive components, preventing signal distortion and interference while allowing each to maintain its antenna functionality. The non-conductive material mediates between the need for conductive surfaces and the need to prevent electrical interference.
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 configuration allows for enhanced antenna performance and durability without increasing device size or weight, enabling improved functionality and component integration in wearable devices.
Implementation Method 1
a radio-frequency (RF)-transparent window defining the band slot
Implementation Method 2
an antenna resonator disposed in the internal volume adjacent the RF-transparent window
Implementation Method 3
a conductor electrically coupling the rear cover to the antenna resonator
Data Source
AI summary
A wearable electronic device can include a sidewall housing defining an internal volume and a band slot configured to receive a securement band. The sidewall housing can include a radio-frequency (RF)-transparent window defining the band slot, a rear cover coupled to the sidewall housing with the rear cover including metal, an antenna resonator disposed in the internal volume adjacent the RF-transparent window, and a conductor electrically coupling the rear cover to the antenna resonator.