摘要
雷达吸波材料的吸波性能通常以吸波材料对电磁波的功率反射系数来表示.功率反射系数是各层的厚度、磁导率和介电常数的函数.本文选用多变量函数的搜索方法,利用Hooke Jeeves算法由C++编译器依据传输线理论编制了优化设计程序,对所选用吸波剂MnO和ZnO铁氧体材料进行了计算,并掺入适量的Fe3O4控制自然共振吸收频率,利用共振机理,实现了在较大程度上展宽频带.同时将利用Lichtenecher公式计算出的各个吸收剂成分用环氧树脂作粘结剂,复合成吸波材料,进行了吸波性能测试.结果发现,随着环氧树脂成分的增加,复合材料的电磁参数呈现降低趋势,因而在复合过程中合理地控制环氧树脂的成分,可以得到各层复合材料所需要的电磁参数.
The absorbing property of radar absorbing material is usually expressed by the power reflection coefficient of the absorbing material toward the electromagnetic wave. Power reflection coefficient is a function of the thickness of each layer, the magnetic permeance coefficient and the dielectric coefficient. The arithmetic of Hooke-Jeeves is used to compile the optimization program using the transmission line theory.The program is used to calculate the power reflection coefficient of the absorbing material-MnO and ZnO ferrite. Moderate Fe 3O 4 are also mixed into the absorbing materials to adjust the nature resonance frequency, widen the band of absorbing frequency to a large extent following the resonance theory. Each ingredient of the absorber is calculated with the function of Lichtenecher. The absorbing property of each absorber is also measured. The absorbing material is felted by the epoxy resin. As a result, the electromagnetic parameter is decreasing with the increasing of the epoxy resin, so the electromagnetic parameter of each layer can be met by adjusting the amount of the epoxy resin.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
2003年第5期544-547,共4页
Journal of Harbin Engineering University
关键词
传输线理论
结构吸波材料
等效电磁参数理论
成分设计
频散效应
transmission line theory
structural radar absorbing material
effective electromagnetic parameters theory
component design
dispersion effect
