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Reflective Focusing Based on Few-Layer Gradient Metasurface Element Array
- Source :
- Frontiers in Physics, Vol 8 (2020)
- Publication Year :
- 2020
- Publisher :
- Frontiers Media S.A., 2020.
-
Abstract
- This study proposes a three-layer focusing gradient metasurface for wavefront processing. The structure works in the frequency range of 15–25 GHz and has a central frequency of 19.6 GHz. The metasurface unit is organized in a square and has high-impedance elements that reflect the full range of phase shifts. When the microwave beam is incident on this metasurface, the high-impedance elements modulate the beam according to the gradient arrangement, to realize the focusing effect of the lens, and the efficiency reaches 82%. The simulation results are consistent with the theoretical results.
- Subjects :
- metasurface
reflective
focus
wavefront
simulation
Physics
QC1-999
Subjects
Details
- Language :
- English
- ISSN :
- 2296424X
- Volume :
- 8
- Database :
- Directory of Open Access Journals
- Journal :
- Frontiers in Physics
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.bf6cd211cdb545b180a20e309f01d44e
- Document Type :
- article
- Full Text :
- https://doi.org/10.3389/fphy.2020.00046