Multi-Beam Forming and Controls by Metasurface With Phase and Amplitude Modulations
| Autor: | Ruizhe Jiang, Qian Ma, Tie Jun Cui, Rui Yuan Wu, Xiaojian Fu, Guo Dong Bai, Jing Mu, Lei Bao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
business.industry Scattering Holography Phase (waves) Physics::Optics Metamaterial 020206 networking & telecommunications 02 engineering and technology Electromagnetic radiation Refraction law.invention Optics Amplitude law 0202 electrical engineering electronic engineering information engineering Reflection (physics) Electrical and Electronic Engineering business |
| Zdroj: | IEEE Transactions on Antennas and Propagation. 67:6680-6685 |
| ISSN: | 1558-2221 0018-926X |
| Popis: | Owing to the capability of providing a certain phase gradient on the interface between two media, metasurfaces have shown great promise for altering the directions of outgoing electromagnetic (EM) waves arbitrarily. With the suitable arrangement of particles on metasurfaces, anomalous reflection and refraction have been observed in wide frequency ranges. To completely control the propagation of EM waves, both phase and amplitude profiles are required in some applications. Herein, we propose a new type of metasurface with both phase and amplitude modulations, which is composed of C-shaped particles and can generate and control multiple beams using amplitude and phase responses simultaneously. An addition theorem of complex reflection coefficients is presented to acquire various states of multiple beams reflected from designed metasurfaces. Meanwhile, the intensities of multiple beams can be separately modulated as desired benefitting from the independent controls of phase and amplitude profiles. All the experimental results have good agreements with the numerical simulations. The presented method opens a new way to form and manipulate multiple beams using metasurfaces, which can find potential applications in beam shaping, radar detection systems, and high-quality holography. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|