| Full text | |
| Author(s): |
Pepino, Vinicius M.
;
da Mota, Achiles F.
;
Martins, Augusto
;
Borges, Ben-Hur V.
Total Authors: 4
|
| Document type: | Journal article |
| Source: | IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS; v. 17, n. 11, p. 4-pg., 2018-11-01. |
| Abstract | |
In this letter, we design and fabricate a three-dimensional printed all-dielectric planar metalens for microwave focusing into a receiving antenna. The structure allows the antenna gain to be increased by 7.5 dB at 32.5 GHz with a bandwidth of 2.4 GHz. The metalens has a focus full-width at half-maximum of similar to 0.85 lambda with a 3 dB depth-of-focus of approximately 5 cm. We show that the antenna half-power beamwidth can be reduced from 36 degrees to 3 degrees in the azimuthal plane and from 4.5 degrees to 3 degrees in the elevation plane with the help of the metalens. In addition, we demonstrate that the metalens performs equally well at oblique incidence, with a 50 degrees and 40 degrees span in the azimuthal and elevation planes, respectively. (AU) | |
| FAPESP's process: | 13/07276-1 - CEPOF - Optics and Photonic Research Center |
| Grantee: | Vanderlei Salvador Bagnato |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |