聚氨脂泡沫发泡成型 ,外表用环氧胶粘贴玻璃布是印刷振子天线常用的包封方法 ,具有重量轻、强度高、制造方便、成本低的优点。但聚氨脂泡沫导热性能差 ,印刷振子损耗产生的热量不易散出去 ,因而限制了天线的耐功率能力。文中介绍了聚氨脂泡沫包封印刷振子天线的耐功率计算和试验测试方法

It's usual for a printed dipole to be encapsulated in polyurethane foam then use epoxy adhesive to glue glass cloth on the surface of polyurethane foam. This method has advantages of light weight, high strength, easy manufacturing and low cost. But the heat conductivity of polyurethane foam is not good enough to dissipate heat that printed dipole has produced due to its power loss. So the power capacity of printed dipole is limited. The calculation and test methods of the power capacity of printed dipole which is encapsulated in polyurethane foam are presented in this paper.

TN821.4