Hinge Barrel Antenna System for Mobile Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional antenna systems in mobile computing devices face interference and performance degradation due to metal components in the chassis base and hinge barrel, especially when devices transition from laptop to tablet orientation, causing ground plane changes and structural feature interference.
Innovation Solution
The antenna system is relocated from the display chassis to the hinge barrel, where a support member with 'tuned' slots and feed structures is used to emit radio waves, minimizing interference by positioning the antennas away from the chassis base and display chassis in all orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna system is positioned in the bezel on the display chassis, then the antenna system is protected from interference by metal components, but the bezel thickness increases limiting design flexibility
Solution Approach 1:
The antenna system is extracted from the display chassis bezel and relocated to the hinge barrel assembly. This removes the antenna from the constrained bezel space, eliminating the need for thick non-conductive bezels while maintaining performance through the hinge's inherent metal structure and grounding features.
Solution Approach 2:
The hinge barrel assembly serves dual functions: providing mechanical support for the display device and housing the antenna system. The metal hinge components that provide structural strength also serve as grounding elements and shielding for the antenna, eliminating the need for separate protective structures.
2Shape
If metal surfaces are added to mobile computing devices for aesthetic reasons, then appearance is improved, but metal clearances necessary to prevent interference with antenna systems are reduced
Solution Approach 1:
The metal surfaces that would normally cause antenna interference are converted into beneficial grounding and shielding elements. The hinge barrel's metal components are electrically connected to the antenna system, using the previously harmful metal interference to create effective ground planes and shielding that improve antenna performance.
Solution Approach 2:
The hinge barrel assembly acts as an intermediary between the metal chassis components and the antenna system. It provides controlled electrical connections and grounding paths that manage the interaction between metal surfaces and the antenna, preventing unwanted interference while maintaining aesthetic metal surfaces.
3Adaptability or versatility
If the chassis configuration is modified from laptop/notebook to tablet, then device versatility is improved, but ground plane changes cause antenna system interference
Solution Approach 1:
The antenna system is mounted on the movable hinge barrel assembly rather than the fixed display chassis. As the hinge moves between laptop and tablet configurations, the antenna system dynamically repositions itself relative to the chassis, maintaining optimal spacing and grounding relationships across different device orientations and configurations.
Solution Approach 2:
The antenna system is positioned in a third dimension - on the hinge barrel assembly that connects the display to the chassis - rather than on the display surface or chassis base. This spatial repositioning allows the antenna to maintain consistent performance across configuration changes by being located at the intersection point of moving components.
4Reliability
If the antenna system is moved from the display chassis to the chassis base or hinge, then interference from display chassis structural features is reduced, but metal components in the hinge cause degraded antenna system performance
Solution Approach 1:
The metal components in the hinge that would normally degrade antenna performance are converted into beneficial grounding and shielding elements. The hinge's metal structure provides controlled electrical connections and ground planes that improve antenna performance, transforming the previously harmful metal interference into a useful feature.
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 maintains consistent wireless communication performance across different device orientations by isolating the antennas from interfering metal components, enhancing signal quality and reducing return loss in desired frequency ranges.
Implementation Method 1
the first slot is dimensioned such that the combination of the first slot and the feed structure emit radio waves having a first predetermined frequency when the feed structure is activated by the wireless communication engine
Data Source
AI summary
A hinge barrel antenna system includes a first hinge device and a second hinge device that couple a chassis base to a display device. A hinge barrel extends between the first hinge device and the second hinge device. A hinge barrel support member is included in the hinge barrel and defines a first slot that extends through the hinge barrel support member. A feed structure is coupled to the hinge barrel support member adjacent the first slot by a circuit board. The first slot is dimensioned such that the combination of the first slot and the feed structure emit radio waves having a first predetermined frequency when the feed structure is activated.