Foldable Housing Antenna Layout for Higher Gain Signals
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Solution Overview
Problem
The limited space in foldable electronic devices compromises the radiation performance and signal strength of antennas, necessitating a solution to enhance antenna gain without additional space.
Innovation Solution
The electronic device incorporates a first housing, a second housing, and a third housing, with a first radiator positioned in the third housing, allowing the housings to rotate to specific target angles, enabling current distribution and superimposed radiation to improve antenna gain, mimicking circularly polarized antennas, thus enhancing signal strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna space is increased in foldable electronic devices, then the radiation performance is improved, but the device complexity and structure are worsened
Solution Approach 1:
The patent merges the antenna function with the housing structure itself. The first housing, second housing, and third housing are electrically connected to form a distributed antenna system, where the housing structures serve dual purposes as both mechanical components and radiating elements. This integration eliminates the need for separate dedicated antenna spaces while maintaining radiation performance.
Solution Approach 2:
The housing structures perform multiple functions: they provide mechanical support and protection while simultaneously serving as radiating elements for antenna operations. The electrically connected housings create a multi-functional system that achieves both structural integrity and antenna radiation performance without requiring additional dedicated antenna components.
2Reliability
If additional antennas are added to improve signal strength, then the antenna gain is improved, but the device complexity and space requirements are worsened
Solution Approach 1:
The patent combines multiple radiating elements (first housing, second housing, third housing) into a single integrated antenna system. These electrically connected housings work together as one unified antenna structure, achieving high signal strength and gain without requiring multiple separate antenna components that would increase device complexity.
Solution Approach 2:
The antenna system dynamically adapts to different folding states of the device. As the housings rotate relative to each other during folding and unfolding, the radiation pattern and impedance of the antenna system change dynamically, allowing the same structure to provide optimal performance across multiple device configurations without requiring additional antennas.
3Reliability
If the housing structures are made electrically connected to distribute current, then the antenna gain is improved through superimposed radiation, but the manufacturing precision requirements are worsened
Solution Approach 1:
The electrical connections between housings are integrated into the manufacturing process of the housing structures themselves, rather than being added as separate precision components. This merging of connection functions into the primary structural manufacturing reduces the need for additional high-precision assembly steps.
Solution Approach 2:
The patent utilizes the natural electrical properties and geometric parameters of the housing structures to achieve effective current distribution. By designing the housing dimensions and connection points to work with standard manufacturing tolerances, the system achieves reliable electrical connectivity and radiation superposition without requiring ultra-precise manufacturing.
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 improves antenna gain by superimposing radiation energies, achieving high-gain performance without the need for additional antennas, thereby addressing the issue of limited space in foldable devices.
Implementation Method 1
the current distributed on the first radiator may be coupled to the third housing, and the current is distributed on each of the first housing, the second housing, and the third housing. In this way, energy of radiation of the current distributed on the first housing and the third housing may be superimposed with energy of radiation of the current distributed on the third housing and the second housing, to improve an antenna gain
Data Source
AI summary
An electronic device includes a first housing, a second housing, a third housing and a first radiator. The third housing is rotatably connected to the first housing and the second housing. The first radiator is positioned in the third housing. The electronic device detects, in response to a first operation, that an included angle between the first housing and the third housing is a first target angle and an included angle between the second housing and the third housing is a second target angle.