L-Shaped Slot Antenna Layout for Front-Screen Signal Coverage
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Solution Overview
Problem
Conventional antennas on electronic devices, such as televisions, exhibit high directivity and poor signal coverage in front of the screen due to their placement at the intersection of device sides, which is often limited by other integrated components, leading to inadequate communication with front-facing devices.
Innovation Solution
The antenna design incorporates an L-shaped resonant cavity with multiple slots and a feed, positioned to reduce directivity by utilizing perpendicular planes relative to the metal backplane, and includes a filling medium to fix the feed, enhancing signal coverage through even radiation distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the antenna is disposed at the location at which two sides of the television intersect, then the antenna can be integrated with other functional devices, but the directivity of the antenna becomes high and coverage in front of the screen becomes poor
Solution Approach 1:
The patent introduces a resonant cavity structure that extends the antenna's radiation into the depth dimension (along the Z-axis perpendicular to the backplane), transforming a conventional planar antenna into a three-dimensional structure. This dimensional expansion allows the antenna to radiate signals not only in the horizontal plane but also vertically, achieving omnidirectional coverage in front of the screen while maintaining corner mounting integration
2Adaptability or versatility
If the antenna is disposed at the location at which two sides of the television intersect, then the antenna can be integrated with other functional devices, but the directivity of the antenna becomes high
Solution Approach 1:
The patent segments the single radiation source into multiple independent slots (first slot and second slot) positioned on perpendicular planes within the resonant cavity. Each slot radiates signals in different directional patterns, and their combined effect creates uniform omnidirectional coverage. This segmentation of the radiation function resolves the directivity issue while preserving the corner mounting integration
3Device complexity
If a conventional antenna design is used, then the structure is simple, but the signal coverage in front of the screen is poor
Solution Approach 1:
The patent embeds the antenna elements (slots and feed) within a resonant cavity structure that is nested inside the television's housing at the corner location. This nesting approach allows the complex three-dimensional antenna structure to be compactly integrated into the existing device form factor, achieving enhanced signal coverage without proportionally increasing external dimensions
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 effectively reduces antenna directivity and increases signal coverage in front of the screen by using an L-shaped resonant cavity with slots, ensuring even signal distribution and improved communication with front-facing devices.
Implementation Method 1
The antenna includes a first resonant cavity and a feed. The first resonant cavity includes a first slot and a second slot... The antenna including the first resonant cavity is used to radiate a signal by using the first slot and the second slot on the first resonant cavity
Data Source
AI summary
Embodiments of this application are applicable to the field of antenna technologies, and provide an antenna and an electronic device. The antenna includes a first resonant cavity and a feed. The first resonant cavity includes a first slot and a second slot, the first slot is provided on a first plane in the first resonant cavity; the second slot is provided on a second plane that is in the first resonant cavity and that is adjacent to the first plane, and the first plane and the second plane are perpendicular to a plane on which the metal backplane is located; and the feed is disposed in the first resonant cavity for feeding the antenna. By using the antenna provided in the embodiments of this application, signal coverage in front of a screen of the electronic device can be increased.