Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7929827 | Optics Communications | 2015 | 6 Pages |
Abstract
Based on the transformation optics (TO) and the effective medium theory (EMT), a new illusion media with homogeneous and isotropic materials is proposed to realize the far-field high resolution effects. When two point sources with the separation distance of λ0/4 are covered with the illusion media (λ0 is the free-space wavelength), the corresponding far-field pattern is equivalent to the case of two point sources with the separation distance larger than λ0/2 in free space, leading to the far-field high resolution effects (in free space, the separation distance of λ0/4 is less than half-wavelength, and thus the two point sources cannot be distinguished from each other). Furthermore, such illusion media can be applied to design tunable high-directivity antenna and an angle-dependent floating carpet cloak. Full wave simulations are carried out to verify the performance of our device.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
XueBin Ji, XiaoFei Zang, Zhou Li, Cheng Shi, Lin Chen, Bin Cai, YiMing Zhu,