MnZn铁氧体/橡胶吸波材料中铁氧体体积分数对吸波性能的影响
Dependence of microwave absorption properties on ferrite volume fraction in MnZn ferrite/rubber radar absorbing materials
摘要：
我们报告的分析测量的复磁导率（$μ_r$）和介电常数（$ε_r$）频谱的橡胶雷达吸收材料（RAM）与不同的锰锌铁氧体体积分数。透射/反射测量在矢量网络分析仪中进行。通过将复磁导率和复介电常数代入阻抗匹配方程，确定了最大微波吸收的最佳条件。MnZn铁氧体含量和RAM厚度对微波吸收性能的影响，在2至18 GHz的频率范围内，进行了评估。结果表明，RAM的复磁导率和介电常数谱随铁氧体体积分数的增加而增加。通过阻抗匹配度（反射系数）计算的反射损耗显示了该参数对RAM的厚度和组成的依赖性。
英文摘要：
We report the analysis of measurements of the complex magnetic permeability ($μ_r$) and dielectric permittivity ($ε_r$) spectra of a rubber radar absorbing material (RAM) with various MnZn ferrite volume fractions. The transmission/reflection measurements were carried out in a vector network analyzer. Optimum conditions for the maximum microwave absorption were determined by substituting the complex permeability and permittivity in the impedance matching equation. Both the MnZn ferrite content and the RAM thickness effects on the microwave absorption properties, in the frequency range of 2 to 18 GHz, were evaluated. The results show that the complex permeability and permittivity spectra of the RAM increase directly with the ferrite volume fraction. Reflection loss calculations by the impedance matching degree (reflection coefficient) show the dependence of this parameter on both thickness and composition of RAM.
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