Carbon Fiber Casing Slits for Antenna Signal Transmission
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Solution Overview
Problem
Carbon fiber casings shield antenna signals, limiting their application in electronic devices where aesthetics and signal transmission are required.
Innovation Solution
A carbon fiber electronic device casing with a signal passing region featuring slits and microstructures that allow antenna signals to pass through without shielding, supported by a layer such as glass fiber or resin to maintain structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If carbon fiber is used for the casing to achieve aesthetic effects, then appearance quality is improved, but antenna signal transmission deteriorates due to shielding
Solution Approach 1:
The carbon fiber layer is segmented into multiple regions: a first region with continuous carbon fiber arrangement for aesthetic areas, and a second region with discontinuous carbon fiber arrangement (containing slits) for signal transmission areas. This segmentation allows different regions to serve different functions - aesthetics and signal transmission simultaneously.
Solution Approach 2:
Different regions of the carbon fiber layer are designed with different local qualities: the first region has continuous carbon fiber structure optimized for appearance, while the second region has discontinuous structure with slits optimized for signal transmission. Each region's structure is locally optimized for its specific function.
2Reliability
If carbon fiber layer is made discontinuous to allow signal passage, then signal transmission is improved, but structural strength deteriorates
Solution Approach 1:
The casing uses a composite structure combining carbon fiber layer with a base layer. The carbon fiber layer provides aesthetic function while the base layer provides structural strength. This composite material approach allows the carbon fiber to be discontinuous (for signal transmission) without compromising overall structural integrity.
Solution Approach 2:
The base layer acts as an intermediary that compensates for the structural weakness introduced by the discontinuous carbon fiber layer. The base layer maintains structural strength while allowing the carbon fiber layer to be optimized for signal transmission in the second region.
3Reliability
If slits are added to carbon fiber layer for signal passage, then signal transmission is improved, but manufacturing complexity increases
Solution Approach 1:
The slits are preliminarily formed in the carbon fiber layer during the manufacturing process, before final assembly. This preliminary action integrates the signal transmission feature into the casing fabrication process itself, rather than requiring separate post-processing steps.
Solution Approach 2:
The manufacturing process parameters are adjusted to accommodate slit formation in the carbon fiber layer. By changing parameters such as fiber arrangement density and slit dimensions, the design balances signal transmission requirements with manufacturing feasibility.
Data Source
AI summary
An electronic device casing adapted to cover an antenna is provided. The electronic device casing includes a supporting layer and a carbon fiber layer. The carbon fiber layer is disposed on a surface of the supporting layer and includes a signal passing region having a plurality of slits and a plurality of microstructures separated by the slits. The signal passing region is adapted to cover the antenna, and a signal excited by the antenna is adapted to pass through the supporting layer and the slits so as to pass through the electronic device casing. An electronic device having the electronic device casing is further provided.