含电路模拟结构吸波复合材料

研究了电路模拟结构材质、电路模拟结构尺寸、介质层电磁参数等对电阻渐变型和"陷阱"式结构吸波复合材料的吸波性能和力学性能的影响。结果表明:通过合理的结构设计,在其它条件相同的情况下含电路模拟结构电阻渐变吸波复合材料的吸波性能在8~18 GHz范围内有3~5 dB的提高;含电路模拟结构"陷阱"式吸波复合材料在厚度≤4 mm条件下,实现了吸波性能在8~18 GHz频率范围内吸收率≥12 dB。在提高吸波复合材料吸波性能的同时,电路模拟结构的引入使复合材料力学性能有一定的提高,有利于实现吸波复合材料的吸波/承载一体化。 

MICROWAVE ABSORBING COMPOSITE WITH CIRCUIT ANALOGUE

The kinds of materials used in the circuit analogue, the size of the circuit analogue and the electromagnetic parameter influencing the properties of the microwave absorbing composite were studied for the microwave absorbing composite material systems in "trap" type and gradually changed resistance type. The research results show that the microwave absorbing property is improved by 3~5 dB in the frequency range of 8~18 GHz. The microwave absorbing property with the thickness of 4 mm is more than 12 dB in the frequency range of 8~18 GHz. The introduction of circuit analogue into the structural design of the microwave absorbing composite improves not only the wave absorbing properties, but also the mechanical properties. So it is feasible to apply circuit analogue in the design of microwave absorbing composites.