Foldable Antenna Housing Layout for Reduced Metal Interference
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Solution Overview
Problem
In electronic devices with rotatable housings, such as foldable types, the radiation performance of antennas can be degraded due to overlapping with metal components in other housings.
Innovation Solution
The electronic device incorporates a foldable housing with specific conductive and insulating units arranged to align insulating units in both states, using flexible displays and printed circuit boards with ground layers to minimize interference, and includes switches for signal transmission across frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the electronic device is folded to reduce size, then portability is improved, but antenna radiation performance is degraded due to overlapping conductive units
Solution Approach 1:
An insulating unit is introduced as an intermediary component positioned between the first conductive unit and the second conductive unit. This insulating unit prevents direct electromagnetic coupling between the conductive units when the device is folded, thereby maintaining antenna radiation performance while enabling compact folding form factor.
Solution Approach 2:
The patent employs flexible printed circuit boards (FPC) as flexible interconnection structures that allow the device to be folded while maintaining electrical connections. The FPC can bend and deform without breaking, enabling the device to transition between unfolded and folded states while preserving antenna functionality through proper routing and isolation.
2Area of stationary object
If conductive units are placed close together to save space, then device compactness is improved, but electromagnetic interference increases
Solution Approach 1:
The insulating unit serves as a mediator that physically separates the first conductive unit and the second conductive unit. This separation prevents electromagnetic coupling and interference between the conductive units, allowing them to be positioned in close proximity for compact design while maintaining electromagnetic isolation.
Solution Approach 2:
The insulating unit is strategically positioned only in the specific region where electromagnetic coupling would occur between the conductive units. This localized insulation approach provides targeted electromagnetic isolation without affecting other areas of the device, optimizing both compactness and interference reduction.
Data Source
AI summary
An electronic device according to an embodiment may include a first housing structure, a second housing structure, and a foldable housing structure for connecting the first housing structure and the second housing structure. The first housing structure and the second housing structure may include a front plate for interconnecting front surfaces with a flexible display, a rear plate which is an opposite surface to the front plate, a side member which surrounds a space between the front plate and the rear plate, and includes at least in part a conductive portion and an insulating portion, a communication circuit and at least one switch electrically connected to the communication circuit. Other various embodiments are possible.