采用弓形法测试反射率，研究透波层的厚度对结构吸波复合材料吸收峰的影响。结果显示，在4~18 GHz 范围内，厚度对其吸波性能具有显著影响：透波层厚度为0．95 mm时，结构吸波材料的吸收峰值最高，达－22．6 dB；其吸收峰值先随透波层厚度的增加而增强，而后逐渐减弱，透波层厚度对吸收峰值的影响可用二次多项式描述；吸收峰的位置随透波层的厚度增加向低频方向漂移，其漂移位移与透波层厚度线性相关，满足一次线性方程。
The affection of thickness to the absorption peak of the absorbing structure composite materials were studied by arch method.The results showed that the thickness of wave-transparent layer had a significant effect on the performance of the absorbing structure composite materials at the range of 4-18 GHz.While the thick-ness were 0.95 mm,the highest absorption peak were obtained and up to -22.6 dB.With increasing of the wave-transparent layer’s thickness,the max absorption peaks were enhanced firstly,and then gradually weak-en.It could be characterized by quadratic polynomial.At same time,the absorption peak positions were drift to the low-frequency band and the pattern of drift displacement and wave-transparent layer’s thickness meet the first-order equation.
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