Highly Directional Small-Size Antenna Designed with Homogeneous Transformation Optics
Figure 4
(a) The structure of a hexagonal metamaterial shell. (b) field distribution of a small antenna array with nine elements embedded in hexagonal metamaterial shell. (c) field distribution of a small current plane embedded in hexagonal metamaterial shell. The -directed electrical field distributions of (d) large size antenna array and (e) large size current plane in free space.
