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提出了一个应用遗传算法的电路模拟多层吸收体的新设计、遗传算法自动综合各层的电磁参数和厚度以及金属电路屏的各参数,并同时提供几个设计方案。当应用遗传算法对特宽带吸收体设计时,其迭代过程出现波动和在带内出现不好的结果。为了克服这些缺点,文中引入了两项技术,使其工作特性明显地改善。设计实例表明在无金属基底的吸收体情形,电路模拟吸收体比普通设计优越得多,在厚度更小和用更少材料下能在特宽带内获得低反射。
A new design of circuit simulation multi-layer absorber based on genetic algorithm is proposed. The genetic algorithm automatically integrates the electromagnetic parameters and thickness of each layer and the parameters of the metal circuit panel. At the same time, several design schemes are provided. When using GA to design extra-wideband absorbers, the iterative process fluctuates and yields poor results in the band. In order to overcome these shortcomings, two techniques have been introduced to improve their working characteristics. Design examples show that in the case of absorber without metal substrate, the circuit analog absorber is much superior to the conventional design, with low reflections in the ultra-wideband with smaller thickness and with less material.