Suspended Dual-Patch Antenna Unit for Lower Mutual Coupling
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Solution Overview
Problem
The mutual coupling effect in miniaturized antennas leads to poor antenna performance due to changes in current amplitude and phase distribution, which affects the current and phase distribution.
Innovation Solution
An antenna unit with a base substrate, including a first radiation patch, a feeder line, and a second radiation patch, suspended on a side of the first radiation patch, a feeder line, and a second radiation patch, a feeder line, and a second radiation patch, a second separation structure, and a feeder line, a second radiation patch, with a separation structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If antennas are miniaturized to reduce size, then the antenna size is reduced, but mutual coupling effect increases causing poor antenna performance
Solution Approach 1:
The patent divides the radiation patch into multiple segments (first radiation patch and second radiation patch) separated by separation structures. This segmentation reduces mutual coupling between adjacent antenna elements while maintaining the overall compact antenna size, thereby resolving the contradiction between miniaturization and performance.
Solution Approach 2:
The patent introduces separation structures (such as separation walls or grooves) as intermediary elements between the first and second radiation patches. These intermediaries reduce the direct coupling effect between adjacent patches, allowing compact antenna design while maintaining acceptable performance levels.
2Length of moving object
If spacing between antenna structures is reduced for miniaturization, then antenna size is reduced, but mutual coupling effect increases changing current amplitude and phase distribution
Solution Approach 1:
By segmenting the radiation patch and introducing separation structures, the patent maintains stable current distribution patterns despite reduced spacing. The separation structures act as current barriers that prevent excessive coupling while allowing compact dimensions.
Solution Approach 2:
The patent applies different structural characteristics to different regions of the antenna. The separation structures are strategically positioned at critical locations where coupling occurs, while other regions maintain continuous structures for optimal radiation. This localized differentiation stabilizes current distribution in the presence of reduced spacing.
Data Source
AI summary
An antenna unit and a preparation method therefor, an antenna array, and an electronic device. The antenna array comprises at least one antenna unit. The antenna unit comprises: a substrate (2) comprising a first surface and a second surface which are arranged opposite to each other in the thickness direction of the substrate (2); a first radiation patch (3) disposed on the first surface of the substrate (2); feed lines (4) disposed on the first surface of the substrate (2), the feed lines (4) being connected to the first radiation patch (3); and a second radiation patch (5) suspended on the side of the first radiation patch (3) away from the substrate (2), the orthographic projection of the second radiation patch (5) on the substrate (2) overlapping the orthographic projection of the first radiation patch (3) on the substrate (2).