5G Antenna Unit With Intersecting Support Plates
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Solution Overview
Problem
Existing 5G antenna units face issues such as narrow frequency bands, high manufacturing costs, large size, high weight, and unstable performance due to direct feeding structures and passive intermodulation.
Innovation Solution
The 5G antenna unit incorporates a feed stalk with intersecting support plates and a radiation structure, featuring a cross slotted or cross stripped copper structure for impedance matching and frequency adjustment, along with a coupling feeding mechanism using U-shaped or 1-shaped feed lines and a feed board with a four-point feeding structure for improved assembly and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a direct feeding structure is used in the 5G antenna unit, then the structure is simple, but the assembly is difficult and the performance is unstable due to passive intermodulation
Solution Approach 1:
The patent introduces a feed stalk as an intermediary component between the feed board and the radiation structure. This feed stalk includes support plates with feed lines that couple to the radiation surface, acting as a mediator that eliminates direct feeding while ensuring stable performance and reducing passive intermodulation effects.
2Ease of manufacture
If the antenna unit is designed with traditional structures, then the manufacturing process is established, but the manufacturing cost is too high and the weight is too heavy
Solution Approach 1:
The patent employs composite material structures in the feed stalk and support plates, combining different materials to achieve optimal strength-to-weight ratio. This reduces the overall weight of the antenna unit while maintaining manufacturing feasibility through established composite material processing techniques.
3Strength
If the antenna unit occupies large space for traditional design, then the structural integrity is maintained, but the space occupied is too large and miniaturization is difficult
Solution Approach 1:
The patent implements a nested structure where the feed stalk is integrated within the radiation structure, and support plates are positioned to maximize space utilization. The feed lines are routed through the support plates in a compact arrangement, enabling miniaturization while preserving structural integrity through hierarchical nesting of components.
4Adaptability or versatility
If traditional antenna structures are used, then the design is conventional, but the frequency band is too narrow and signal loss is too large
Solution Approach 1:
The patent incorporates adjustable and adaptable feed line configurations in the support plates, allowing dynamic optimization of the feeding structure for different frequency bands. The coupling between feed lines and radiation surface can be adjusted to minimize signal loss across a broader frequency range, enhancing adaptability while reducing energy loss.
Data Source
AI summary
A 5G antenna unit includes: a feed stalk including two support plates intersected with each other; a radiation structure disposed at a first end of the feed stalk and including a radiation surface away from the first end of the feed stalk; and a feed board disposed at a second end of the feed stalk. One end of each of the two support plates adjacent to the radiation structure partially passes through the radiation surface of the radiation structure to fix and support the radiation structure. Each support plate is provided with at least two feed lines for coupling with the radiation surface. An end surface of the feed board adjacent to the feed board is provided with a feed network including a plurality of feed points. Each feed point is electrically connected to one of the feed lines to form a feeding structure including at least two feed points of the plurality of feed points.