基于电磁谐振的极化无关透射吸收超材料吸波体  

A polarization-independent transmission absorption metamaterial absorber based on electromagnetic resonance

作　　者：鲁磊[1] 屈绍波[1] 马华[1] 余斐[1] 夏颂[2] 徐卓[2] 柏鹏[3] 

机构地区：[1]空军工程大学理学院,西安710051 [2]西安交通大学,电子材料与器件教育部重点实验室,西安710049 [3]空军工程大学综合电子信息系统研究中心,西安710051

出　　处：《物理学报》2013年第10期115-120,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:11274389;61071058;11204378);国家重点基础研究发展计划(批准号:2009CB623306)资助的课题~~

摘　　要：仿真并实验验证了基于电磁谐振的极化无关透射吸收超材料吸波体,该吸波体可以实现低频透射和高频吸收.实验测试结果表明,该吸波体在6.77GHz吸收率峰值为83.6%,半功率带宽为4.3%,实现窄带强吸收.为进一步拓展该谐振型超材料吸波体的吸收带宽,利用其低频透射特性,将两个工作于不同频段的吸波体叠加在一起,测试结果表明,复合后超材料吸波体的半功率带宽可以增大到10.9%,吸收率也略有增强.该超材料吸波体设计简单,具有较强的实用性和应用前景.In this paper, we simulate and experimentally validate a polarization-independent transmission absorption metamaterial absorber based on electromagnetic resonance. The metamaterial absorber can absorb the high-frequency electromagnetic wave, and the low- frequency wave can transmit through the absorber. The tested results indicate that the metamaterial absorber can achieve a narrow bandwidth high absorption with a peak absorption of 83.6% at 6.77 GHz, and a full width at half maximum （FWI-IM） of 4.3%. To further broaden the absorption bandwidth of the resonant metamaterial absorber, we place two absorbers with different working frequencies together for its low-frequency transmitted characteristic. The measured data show that the composite metamaterial absorber can increase the FWHM to 10.9%, and can enhance the absorption slightly. The metamaterial absorber has some advantages, such as simple design, strong practicability, and important application foreground.

关 键 词：极化无关 透射吸收 超材料吸波体 

分 类 号：TB34[一般工业技术—材料科学与工程]