A polarization-dependent wide-angle three-dimensional metamaterial absorber

作者：Wang Jiafu^*; Qu Shaobo; Xu Zhuo; Ma Hua; Yang Yiming; Gu Chao; Wu Xiang

来源：Journal of Magnetism and Magnetic Materials, 2009, 321(18): 2805-2809.

DOI：10.1016/j.jmmm.2009.04.017

• Three-dimensional metamaterial absorber
• Wide-angle
• Magnetic resonator
• Electric resonator

In this paper, a polarization-dependent wide-angle three-dimensional metamaterial absorber with a near-unity absorbance was presented. The metamaterial absorber structure is composed of coplanar electric and magnetic resonators. By carefully adjusting the structural dimensions, less-than-unity epsilon and/or mu can be realized. To match the impedance of free space, the structural dimensions were adjusted so that epsilon = mu, which guarantees minimum reflection. Since the resonance-based structure is made of metallic resonators and lossy substrates, the imaginary part of refractive index is large, which guarantees strong absorption of transmitted waves. Full-wave simulations confirmed the effectiveness of the proposed three-dimensional metamaterial absorber.

• 出版日期2009-9
• 单位中国人民解放军空军工程大学; 西安交通大学