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制备了一种含损耗介质和谐振子的环氧树脂基微波吸收复合材料,在8.2～12.4GHz频率范围内作了复合材料的电磁参数测试。结果表明:这种复合材料的磁损耗很小,主要损耗机制是介电损耗。由传输线等效电路模拟吸波复合材料,根据输入阻抗计算电磁波反射系数,给出了功率反射系数计算的BASIC程序.并把计算结果与扫频测试结果作了对比。对比结果表明:理论计算与实测的功率反射系数随频率的变化规律基本一致.
A kind of epoxy resin-based microwave absorbing composite material containing lossy media and harmonic oscillator was prepared, and the electromagnetic parameters of the composite material were tested in the frequency range of 8.2 ~ 12.4GHz. The results show that the magnetic loss of the composite is very small and the main loss mechanism is the dielectric loss. The equivalent circuit of the transmission line is used to simulate the wave absorbing composite material, and the reflection coefficient of the electromagnetic wave is calculated according to the input impedance, and the BASIC program for calculating the power reflection coefficient is given. The calculated results are compared with the results of the frequency sweep test. The comparison results show that: the theoretical calculation and measured power reflection coefficient with the frequency of the law of change is basically the same.