Dual-Feed Antenna Layout for High-Isolation Compact Electronics
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Solution Overview
Problem
In electronic devices with limited space, disposing multiple antennas reduces isolation between them, affecting communication quality.
Innovation Solution
A radiator with two feed points, positioned at specific distances along its length, allows for two antenna modes with high isolation, enabling multiple antennas to be packed efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate antenna module is provided in addition to the touchscreen display, then wireless communication function is improved, but device thickness is increased
Solution Approach 1:
The patent combines the antenna module and touchscreen display into a single integrated structure. The antenna module is positioned behind the touchscreen display with its radiation surface substantially coinciding with the display surface, allowing wireless communication functionality to be merged with the display component, thereby avoiding increased device thickness.
Solution Approach 2:
The antenna module utilizes the space in the thickness direction by positioning it behind the touchscreen display. The radiation surface of the antenna is substantially coincident with the display surface, effectively using the Z-axis dimension without increasing the overall device thickness in this direction.
2Area of stationary object
If antenna elements are arranged close together to reduce area, then device area is reduced, but mutual coupling between elements increases
Solution Approach 1:
The patent applies different ground structure configurations to different regions of the antenna module. Specific ground patterns are designed in different areas to control and reduce mutual coupling between adjacent antenna elements, allowing the antenna elements to be arranged closely while maintaining performance.
Solution Approach 2:
The ground structure serves as an intermediary element between adjacent antenna elements. By carefully designing the ground pattern, it acts as a mediator to reduce electromagnetic coupling between elements, enabling closer spacing without significant performance degradation.
3Length of stationary object
If antenna module is integrated behind touchscreen display, then device thickness is reduced, but heat dissipation becomes more difficult
Solution Approach 1:
The patent segments the heat dissipation function from the antenna module structure by introducing a separate heat dissipation layer. This layer is positioned between the antenna module and touchscreen display, allowing heat management to be handled independently while maintaining the integrated thin structure.
Solution Approach 2:
The heat dissipation layer acts as an intermediary thermal management component between the antenna module and touchscreen display. It facilitates heat transfer and dissipation without requiring additional space in the thickness direction, enabling thermal management in the integrated structure.
Data Source
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AI summary
This application provides an antenna and an electronic device. The antenna includes: a radiator, and a first feed point and a second feed point that are disposed on the radiator. One end of the radiator is an open end, and the first feed point is located between the open end and the second feed point. The radiator includes a first position and a second position, where a distance between the first position and the open end along the radiator is a quarter of a target wavelength, and a distance between the second position and the first feed point along the radiator is a half of the target wavelength. The first feed point is disposed at a position that deviates from the first position by a first preset value, and the first preset value is greater than or equal to 0, and less than or equal to one sixteenth of the target wavelength. The second feed point is disposed at a position that deviates from the second position by a second preset value, and the second preset value is greater than or equal to 0, and less than or equal to one sixteenth of the target wavelength. In the foregoing technical solution, two antenna modes with high isolation can be implemented by disposing a same radiator, so that space of the electronic device can be saved.