3D Slot Antenna Frame Layout for UWB Space and Isolation
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Solution Overview
Problem
Electronic devices face challenges in designing antennas for UWB frequency bands due to limited space, especially when components like cameras, speakers, and communication modules occupy significant areas, making it difficult to form slots along the metal frame effectively.
Innovation Solution
The implementation of a 3D-shaped slot antenna technology within the metal frame's bridge portion, which includes a first slot portion region penetrating one surface and a second slot portion region penetrating another surface, allowing for efficient radiation and improved isolation between antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional 2D slot antenna design is used in metal frame, then antenna structure is simple, but available space is insufficient due to components occupying significant areas
Solution Approach 1:
The patent transitions from a traditional 2D slot antenna design to a 3D slot antenna structure by extending the slot region in multiple directions (first direction along the metal frame, second direction perpendicular to the first direction). This dimensional expansion allows the antenna to utilize three-dimensional space within the metal frame, significantly increasing the available radiation space without proportionally increasing structural complexity.
Solution Approach 2:
The 3D slot antenna structure is nested within the metal frame structure, utilizing the existing frame geometry. The slot region is formed by creating openings or removing material from the metal frame itself, allowing the antenna structure to be integrated into the housing rather than adding separate antenna components, thereby optimizing space utilization.
2Adaptability or versatility
If multiple antennas are placed in limited space, then communication functionality is enhanced, but isolation between antennas deteriorates
Solution Approach 1:
The patent creates different local electromagnetic environments for adjacent antennas by forming slot regions with specific geometries and orientations. The first slot region and second slot region are designed with different configurations (different directions, lengths, and positions), which creates localized electromagnetic isolation. This allows multiple antennas to operate in close proximity while maintaining adequate isolation through carefully designed local slot structures that control electromagnetic field distribution.
3Ease of manufacture
If slot region is formed along metal frame periphery, then antenna integration is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent combines the antenna slot formation process with the metal frame manufacturing process. The slot regions are formed as integral parts of the metal frame structure, either by creating openings during frame fabrication or by removing material from the frame. This merging of antenna and housing manufacturing allows for simultaneous production of both components, improving ease of manufacture while the standardized slot geometries help control manufacturing precision requirements.
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 design enhances antenna integration, increases spatial efficiency, and maintains high radiation efficiency while providing effective isolation between adjacent antennas, even in devices with limited design space.
Implementation Method 1
a region configured to function as a slot antenna... perform a communication through the region
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing comprising a frame having a region configured to function as a slot antenna and a wireless communication circuit configured to perform a communication through the region. The frame includes a conductive portion at least partially formed along a periphery of the frame, a support portion of the frame, and a bridge portion formed between the conductive portion and the support portion. The bridge portion includes a first connection portion disposed between a first region of the conductive portion and the support portion, and includes a second connection portion disposed between a second region of the conductive portion and the support portion. The region includes a first elongated portion having a first longitudinal direction toward an interior of the housing, between the first connection portion of the bridge portion and the second connection portion of the bridge portion. The region includes a second elongated portion having a second longitudinal direction at least partially from a rear side to a front side of the housing, between the first region of the conductive portion and the second region of the conductive portion.