双向多频超材料吸波器的设计与实验研究

Study on the design and measurement of dual-directional multi-band metamaterial absorber

利用金属线单元组合法,仿真设计并制作了一种在通信频段(0.8—3 GHz)的双向多频超材料吸波器.仿真与实验结果表明:该吸波器对于不同极化和宽角度入射的电磁波有三个稳定的吸波频点,分布在2.04 GHz,2.34 GHz和2.65 GHz,吸收率分别达到92.3%,95.3%和94.7%.该吸波器设计简单、灵活性强、吸收效果好、易于加工,为通信领域的电磁屏蔽或抗电磁干扰提供了新的方法.

Using the method of combination, we have made a communicational band （0.8 GHz to 3 GHz） dual-directional metamaterial absorber. Simulation and experimental results show that the absorber to the incident electromagnetic wave of different polarization and wide-angle has three stable absorbing bands（2.04, 2.34, and 2.65 GHz）, and the absorptions can reach 92.3%, 95.3% and 94.7% respectively. This kind of absorber is very simple in design, having strong flexibility, perfect absorption, and easy processing, which works in a communicational band （0.8 to 3 GHz） so that it provides a new idea on electromagnetic shielding and anti interference.