用活性碳毡制备电路模拟吸波材料的研究

Research on Single-layer Circuit Analog Absorbing Materials Utilizing Activated Carbon Fiber Felt

研究了以粘胶基活性碳纤维为导电材料制备单层电路模拟吸波材料的微波吸收特性。结果表明:感性电路屏在毡条宽为5mm、a／b为2时吸波性能最好,在8 GHz-18 GHz内达到-10dB以下的反射衰减,最大衰减峰达-30 dB以上;容性电路屏在毡块间距为5 mm、a／b为1.4时吸波性能最好,在8 GHz-18 GHz内达到-10 dB以下的反射衰减,最大衰减峰值-30 dB以上。可用粘胶基活性碳毡制备质轻价廉的雷达吸波材料。

Microwave absorbing properties of single-layer circuit analog absorbing materials utilizing activated carbon fiber (ACF) felts as the conducting material are studied. Experimental results show that as felt width and a/b are 5 mm and 2 respectively, inductive circuit analog absorber gains the best absorbing properties and that the reflection loss in 8 GHz to 19 GHz frequency is below -10 dB and the maximum peak is below -30 dB. As distance between felt width and a/6 are 5 and 1.4 respectively, capacitive circuit analog absorbing gains the optimal absorbing characteristics; the reflection loss in same frequency is below -10 dB and the maximum peak is below -30 dB. So a new type of light microwave absorbing material is obtained when ACF felt are used.