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目的研究金属偶极子的堆叠方式及体积分数对金属偶极子阵列/塑胶基体复合材料在X波段的介电性能的影响。方法采用激光切割技术制备二维周期金属偶极子(尺寸1 mm×0.05 mm)阵列薄片,以三种不同的方式堆叠成为金属偶极子阵列/塑胶复合材料。采用矢量网络分析仪对复合材料的等效复介电常数(ε’和ε“)进行测试。采用ansoft HFFSS软件对偶极子上的电场分布进行模拟。结果该复合材料的ε’值随着金属偶极子体积分数的增大而增大,通过调整偶极子体积分数和堆叠方式,该复合材料的ε’值在3~83范围内调节,在该范围内,复合材料的ε”值很小(通常小于4)。结论根据实际应用的具体需求,可以设计出具有可调ε’值同时具有低ε“值的材料。
Objective To study the influence of metal dipole stacking mode and volume fraction on the dielectric properties of metal dipole array / plastic matrix composites in X-band. Methods Two-dimensional periodic metallic dipoles (1 mm × 0.05 mm in size) were prepared by laser cutting and stacked in three different ways to form metal dipole arrays / plastic composites. The equivalent complex permittivity (ε ’and ε ”) of the composites was tested by a vector network analyzer.The electric field distribution on the dipole was simulated by using the software ansoft HFFSS.Results The ε’ value of the composites was The volume fraction of the metal dipole increases and increases. By adjusting the dipole volume fraction and stacking mode, the ε ’value of the composite material is adjusted in the range of 3 to 83, in which the ε " Value is small (usually less than 4). Conclusion Depending on the specific needs of the application, materials with adjustable ε ’values and low ε’ ’values can be designed.