Foldable Antenna Coil Layout for Extended Wireless Range
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Solution Overview
Problem
Foldable electronic devices face challenges in extending the operation range of antennas supporting short-range wireless communication technologies due to their transformable structures, which can disrupt the magnetic fields used for communication.
Innovation Solution
The electronic device incorporates a foldable housing with a first and second housing connected by a hinge module, featuring a first coil with 'n' turns and a second coil with 'm' turns less than 'n', connected in series, along with a communication module and processor to control the coils, enhancing the antenna's operation range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a single coil antenna is used in a foldable device, then the device structure remains simple, but the operation range of the antenna is limited when the device is folded
Solution Approach 1:
The antenna system is divided into two separate coils (first coil and second coil) positioned in different housings. The first coil is positioned in the second housing and includes a specified n number of turns, while the second coil is positioned in the first housing and includes a specified m number of turns less than the n turns. This segmentation allows each coil to operate effectively in different device configurations, extending the overall operation range while maintaining manageable complexity through functional division.
2Reliability
If multiple coils with different turn numbers are used to extend operation range, then wireless communication performance is maintained across folded and unfolded states, but the device complexity increases
Solution Approach 1:
Different regions of the device (first housing and second housing) are equipped with coils having different local characteristics. The first coil in the second housing has n turns optimized for one configuration, while the second coil in the first housing has m turns (less than n) optimized for another configuration. This local quality differentiation ensures that each coil performs optimally in its specific operational context, maintaining reliable wireless communication across different device states without requiring a single complex multi-mode antenna.
3Length of moving object
If coils are connected in series with different turn numbers, then the magnetic field distribution is optimized for extended range, but the manufacturing precision requirements increase
Solution Approach 1:
The system utilizes parameter changes in the form of different turn numbers (n and m, where n > m) for the two coils to optimize magnetic field distribution across different device configurations. By varying the turn parameter between the first and second coils, the system achieves extended operation range while the series connection maintains manageable manufacturing precision requirements through the inherent relationship between the turn numbers.
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 extends the operation range of antennas, ensuring consistent wireless communication performance across various device configurations, including unfolded, folded, and intermediate states.
Implementation Method 1
a first coil positioned in the second housing and including a specified n number of turns; a second coil positioned in the first housing, including a specified m number of turns less than the n turns, and connected in series to the first coil
Data Source
AI summary
Various embodiments of the present disclosure relate to an electronic device for extending an operation range of an antenna. The electronic device may comprise: a foldable housing including a first housing, a second housing, and a hinge module including a hinge disposed between the first housing and the second housing; a first coil positioned inside the second housing and including n designated turns; a second coil positioned inside the first housing and including m designated turns less than the n, the second coil being connected in series with the first coil; a communication module comprising communication circuitry electrically connected to the first coil and the second coil; and a processor for controlling the communication module.