A periodic wideband pixel absorber is designed by genetic algorithm (GA) combined with a fast circuit simulation method, namely, the internal multi‐port method (IMPM). In order to achieve a wideband absorption effect, the pixel connections of the absorber are optimized by GA into three states, that is, metal connection (no loss), disconnection, and lossy connection states. In the optimization, the performance of the pixel absorber is evaluated quickly by the IMPM, rather than by the time‐consuming full wave simulation. To validate the optimization performance, the optimized wideband absorber is simulated, fabricated and measured. The simulation and measurement results show that the absorber can achieve an 85% (5.5‐13.6 GHz) bandwidth with the absorptivity higher than 90%. Besides, the absorber is insensitive to the polarization and incidence angle of the waves.

中文翻译：

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遗传算法结合内部多端口方法设计周期性宽带像素吸收体

通过遗传算法（GA）结合快速电路仿真方法（即内部多端口方法（IMPM）），设计出了周期性宽带像素吸收器。为了实现宽带吸收效果，通过GA将吸收体的像素连接优化为三种状态，即金属连接（无损耗），断开和有损连接状态。在优化中，像素吸收器的性能可以通过IMPM而不是费时的全波仿真来快速评估。为了验证优化性能，对优化的宽带吸收器进行了仿真，制造和测量。仿真和测量结果表明，该吸收器可以实现85％（5.5-13.6 GHz）的带宽，吸收率高于90％。除了，