树脂基透波复合材料在5G天线罩中的应用分析

Application prospect analysis of resin matrix wave-transmission composite in 5G radome

分析了树脂基透波复合材料的透波特性,针对5G频段和5G天线罩应用特点,对5G天线罩材料主要应用形式和材料选择进行了探讨。在中低频段(2G~6GHz),小型和微型天线罩可选用玻璃纤维增强聚丙烯等低成本、低介电常数的热塑性树脂单层薄壁结构,采用拉挤等自动化程度较高的成型工艺;对于大型天线罩,3D中空复合材料是能满足力学和透波性能且经济可行的方案。未来5G高频段(24GHz以上)用天线罩,将优选透波性能良好的增强纤维和树脂,优化厚度、密度等结构参数,采用在线一体化成型工艺制备3D中空复合材料,有望达到低成本、轻量化、高强度和高透波的目的。

The characteristics of structures and properties of wave-transmitting resin matrix composites were reviewed.According to the application characteristics of 5G frequency band,the main application forms and materials of 5G radome were analyzed.In lower frequency band(2~6 GHz),glass fiber reinforced polypropylene or other low-cost thermoplastic thin board could be the first choice for the small-/micro-size radome,and higher automation degree of molding process should be chosen.For large-size radome,3D hollow glass fiber reinforced composite with unsaturated polyester or epoxy resin were the economical and feasible solution that can satisfy the mechanical and wave transmission properties.In the future,for the radome of 5G high frequency band(≥24 GHz),3D hollow composite,using good wave transmission performance fiber and resin,adopting online integrated molding process and optimized structure design including thickness and density,were expected to achieve the purpose of low cost,high strength and high wave transmission.