Multilayer Composite Sheet for 5G Antenna Housing
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Solution Overview
Problem
Current antenna housings for 5G millimeter wave applications face challenges in achieving improved signal transmission performance and reduced weight due to high signal attenuation and increased weight from integrated components like RRU and AAU.
Innovation Solution
A multilayer composite sheet comprising non-foamed skin layers and a foamed core layer made from polycarbonate compositions, with specific thickness and density ranges, is used to create an antenna housing that enhances signal transmittance and reduces weight, achieved through co-extrusion, thermoforming, or adhesive bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a solid structure antenna housing is made from polycarbonate resin by injection molding or extrusion molding, then the basic mechanical properties are maintained, but the signal loss is high due to higher Dk and Df values
Solution Approach 1:
The antenna housing is divided into multiple layers with different densities and properties: outer skin layers made of solid polycarbonate for mechanical strength and protection, and a core layer made of foamed polycarbonate for low signal attenuation. This segmentation allows each layer to optimize for its specific function, resolving the contradiction between mechanical integrity and signal transmission.
Solution Approach 2:
The patent uses composite material structure combining solid polycarbonate and foamed polycarbonate in a multilayer configuration. The solid outer layers provide mechanical protection while the foamed core layer provides excellent signal transmission with low Dk and Df values, achieving both structural requirements and electromagnetic performance.
2Adaptability or versatility
If the integration of RRU with AAU is performed, then the functionality is enhanced, but the weight of the antenna part is increased
Solution Approach 1:
The core layer uses foamed polycarbonate material which has a porous structure with air pockets distributed throughout. This porous structure significantly reduces the density and weight of the housing while maintaining sufficient mechanical strength and providing excellent electromagnetic wave transmission properties for the integrated antenna system.
Data Source
Figure 1(a)~1(b)
Figure 2(a)~2(b)
Figure 3(a)~3(b)
AI summary
The present application relates to a multilayer composite sheet for antenna housing, a preparation method therefor, and use thereof. The multilayer composite sheet comprises at least two non-foamed skin layers (1, 2) and a foamed core layer (3) therebetween. The multilayer composite sheet according to the present invention can achieve improved signal transmission performance and reduced weight, and can be used as an outdoor and/or indoor antenna housing.