Antenna Structure With Segmented Housing Opening For Radiation
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Solution Overview
Problem
Conventional electronic devices with built-in antennas face challenges such as deteriorated radiation performance due to metallic frames, limited internal space, and the need for multiple antennas to support various frequency bands, making it difficult to achieve both aesthetic design and effective communication.
Innovation Solution
An antenna structure is implemented where a portion of the external housing, formed with a conductive member, includes an opening with a specific configuration that aligns with the antenna radiator, allowing for improved radiation efficiency and additional frequency band support by electromagnetically coupling the opening's circumference with the antenna.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a built-in antenna is mounted inside the electronic device housing, then the aesthetic appearance is improved and breakage concern is reduced, but the antenna radiation performance deteriorates due to metallic frames blocking or distorting signals
Solution Approach 1:
The housing is segmented to form a specific opening pattern (e.g., U-shaped, C-shaped, or E-shaped opening) that divides the metallic frame structure. This segmentation allows electromagnetic signals to pass through the opening while maintaining the aesthetic appearance of the housing, thereby resolving the contradiction between aesthetic design and radiation performance.
Solution Approach 2:
The metallic frame is modified locally by creating openings in specific positions and patterns. The opening pattern is designed to be non-blocking for electromagnetic waves in the target frequency range, while the remaining metallic portions maintain structural integrity and aesthetic appearance. This local modification allows the housing to simultaneously achieve good appearance and radiation performance.
2Adaptability or versatility
If multiple antennas or a complex antenna structure is disposed to support various frequency bands, then the frequency band coverage is improved, but the housing inside space is further limited
Solution Approach 1:
The housing opening pattern serves multiple functions: it acts as both a structural component of the housing and an antenna radiation element. The same opening pattern supports multiple frequency bands by being designed with dimensions and configurations that are not blocking for various frequency ranges, eliminating the need for separate antennas for different frequency bands.
Solution Approach 2:
The antenna function is merged with the housing structure itself. The housing opening pattern directly serves as the antenna radiation element, combining the housing and antenna into a single integrated structure. This eliminates the need for separate antenna components and reduces the space required for antenna installation.
3Reliability
If the housing opening pattern is designed to be non-blocking for electromagnetic waves, then the radiation performance is improved, but the aesthetic appearance may be compromised
Solution Approach 1:
The opening pattern is designed with asymmetric configurations (such as U-shaped, C-shaped, or E-shaped patterns) that are optimized for electromagnetic wave transmission while maintaining aesthetic appeal. The asymmetric design allows strategic placement of openings in positions that minimize visual impact while maximizing radiation performance.
Solution Approach 2:
The opening patterns incorporate curved or rounded designs rather than sharp angular cuts, giving the housing a more aesthetic appearance. The curved opening patterns maintain their non-blocking property for electromagnetic waves while improving the visual appeal of the device.
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 enhances antenna radiation performance, expands the operating frequency bandwidth, and minimizes the size of the antenna structure, while maintaining a sleek design by eliminating the need for additional inductive or capacitive components.
Implementation Method 1
allowing for improved radiation efficiency and additional frequency band support by electromagnetically coupling the opening's circumference with the antenna
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing and an antenna radiator disposed in the housing. An opening is formed in the housing. The opening includes a first portion configured to align with a length direction of the antenna radiator at a position corresponding to the antenna radiator and penetrate the housing in a thickness direction, and a second portion connected to the first portion, the second portion being configured to form a specified angle with respect to the length direction of the antenna radiator and penetrate the housing in a thickness direction. At least a portion of the housing, which surrounds the opening, comprises a conductive member. At least a portion of a circumference of the opening comprises an electrical open curve.