Ku/Ka双频段防弹天线罩复合材料性能

为解决Ku/Ka双频段天线罩的防弹和透波问题，本文通过波导法研究材料的介电性能，并利用HFSS软件对双频工作的复合材料进行透波性能仿真设计，并采用试验与理论计算验证了超高分子量聚乙烯（UHMWPE）防弹和透波性能。研究表明：UHMWPE的介电性能优异，适用于Ku/Ka双频段天线罩。HFSS仿真设计表明，7 mm UHMWPE的Ku频段损耗为0.2 dB，Ka频段损耗为0.6 dB，仿真结果与实际测试结果吻合。防弹打靶试验表明，面密度为5.6 kg/m²的UHMWPE防弹等级优于1级，实测V₅₀值为546 m/s。

Performance of the composite used for bulletproof radome in Ku/Ka band

The need of the bulletproof radome in Ku/Ka band is becoming more and more urgent as the weapon power increasing. The dielectric performances were discussed by waveguide method. After the simulation and experiment, the ultra-high molecular weight polyethylene (UHMWPE) was the best composite in Ku/Ka band. The wave transparent performances of bulletproof laminates were optimized by HFSS software. The loss of 7 mm bulletproof laminate is 0.2 dB at Ku band, while 0.6 dB at Ka band, which fits the simulation result. The bullet performance of 5.6 kg/m² UHMWPE laminate is beyond 1 Class, whose V₅₀ is 546 m/s.