Dual-Antenna Grounding Layout for Better Radiator Isolation
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Solution Overview
Problem
The increased number of antenna radiators in 5G communication devices, due to the design requirements of full-screens and curved-screens, leads to reduced isolation and interference between antenna radiators, adversely affecting their performance.
Innovation Solution
The introduction of a third ground point and a ground element between the feed point and the primary ground point of an antenna radiator, which alters the grounding position, increasing the distance between grounding points of adjacent antenna radiators, thereby improving isolation and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of antenna radiators is increased to support 5G communication bands, then the communication capability is improved, but the isolation between antenna radiators is reduced and interference increases
Solution Approach 1:
The patent introduces a third ground point in addition to the traditional first and second ground points, adding a new dimension to the grounding structure. This third ground point is connected to a different ground reference point, creating a three-dimensional grounding topology that increases isolation between adjacent antenna radiators without occupying additional planar space, thus resolving the interference issue while maintaining 5G communication capability
Solution Approach 2:
The patent introduces a third ground point as an intermediary grounding element between the first and second ground points. This intermediate ground reference point acts as a mediator that provides an additional current return path, reducing the coupling between adjacent antenna radiators and minimizing interference while supporting multiple 5G communication bands
2Area of stationary object
If antenna radiators are placed closer together to accommodate full-screen and curved-screen designs, then the display area is increased, but the isolation between antenna radiators is reduced
Solution Approach 1:
The patent transitions from a two-dimensional grounding structure to a three-dimensional grounding structure by introducing a third ground point at a different spatial location and reference level. This vertical or out-of-plane grounding dimension allows antenna radiators to be placed closer together horizontally while maintaining adequate isolation through the additional grounding path, thus enabling full-screen displays without sacrificing antenna performance
3Area of stationary object
If the grounding position of antenna radiators is moved closer to increase display area, then the display area is increased, but the isolation between antenna radiators is reduced and interference increases
Solution Approach 1:
The patent adds a third ground point that references a different ground plane or ground level, creating a three-dimensional grounding architecture. This allows the first and second ground points to be positioned closer together to maximize display area, while the third ground point provides an alternative current return path that maintains isolation and reduces interference between antenna radiators
Solution Approach 2:
The third ground point serves as an intermediary grounding element that provides an additional current return path when the primary ground points are positioned close together. This intermediate ground reference reduces the mutual coupling and interference between antenna radiators while allowing the display area to be maximized through compact ground point placement
Data Source
AI summary
An electronic device includes a first antenna radiator, a second antenna radiator, a first feed source, and a second feed source. The first antenna radiator includes a first feed point and a first ground point. The second antenna radiator includes a second feed point and a second ground point. The first feed point is disposed at a side of the first ground point away from the second ground point, and the second feed point is disposed at a side of the second ground point away from the first ground point. The first feed source is electrically connected to the first feed point and is configured to provide a feed signal for the first antenna radiator. The second feed source is electrically connected to the second feed point and is configured to provide a feed signal for the second antenna radiator.