Gradient Metasurface With Both Polarization-Controlled Directional Surface Wave Coupling and Anomalous Reflection

A gradient metasurface is proposed to obtain both surface wave coupling and anomalous reflection. The unit cell of the gradient metasurface is composed by six electric field coupled resonators in different rotation angle, which provides a phase gradient. The simulation and measured results show that this gradient metasurface can work at 7.8 GHz as a surface wave coupler and at 10.288 GHz providing a phenomenon of anomalous reflection. At the two frequencies, the direction of the reflection is polarization-controlled, and the efficiencies are polarization-invariant. At left-handed polarization incidence, the direction of the coupled surface wave and the anomalous reflection are opposite to the situation at right-handed polarization incidence.

[1]  T. I. Yuk,et al.  Linear-to-Circular Polarization Conversion Using Metasurface , 2013, IEEE Transactions on Antennas and Propagation.

[2]  S. Maci,et al.  Metasurfing: Addressing Waves on Impenetrable Metasurfaces , 2011, IEEE Antennas and Wireless Propagation Letters.

[3]  Yongfeng Li,et al.  High-efficiency spoof plasmon polariton coupler mediated by gradient metasurfaces , 2012 .

[4]  D. Smith,et al.  Gradient index metamaterials. , 2005, Physical review. E, Statistical, nonlinear, and soft matter physics.

[5]  Shi Zheng,et al.  Dual-band polarization angle independent 90° polarization rotator using twisted electric-field-coupled resonators , 2014 .

[6]  Guofan Jin,et al.  Dispersionless phase discontinuities for controlling light propagation. , 2012, Nano letters.

[7]  N. Yu,et al.  Flat optics with designer metasurfaces. , 2014, Nature materials.

[8]  Chih-Ming Wang,et al.  High-efficiency broadband anomalous reflection by gradient meta-surfaces. , 2012, Nano letters.

[9]  Andrea Alù,et al.  REVIEW ARTICLE: Plasmonic and metamaterial cloaking: physical mechanisms and potentials , 2008 .

[10]  R. Pogorzelski,et al.  A Ka-band microstrip reflectarray with elements having variable rotation angles , 1998 .

[11]  F. Caminita,et al.  Non-Uniform Metasurface Luneburg Lens Antenna Design , 2012, IEEE Transactions on Antennas and Propagation.

[12]  Zhuo Xu,et al.  Super-thin cloaks mediated by spoof surface plasmons , 2012 .

[13]  Shulin Sun,et al.  Gradient-index meta-surfaces as a bridge linking propagating waves and surface waves. , 2012, Nature materials.

[14]  A. Alú,et al.  Mantle cloaking using thin patterned metasurfaces , 2011 .

[15]  H. Legay,et al.  Polarimetric Control of Reflective Metasurfaces , 2012, IEEE Antennas and Wireless Propagation Letters.

[16]  A. Kildishev,et al.  Planar Photonics with Metasurfaces , 2013, Science.

[17]  David R. Smith,et al.  Electric-field-coupled resonators for negative permittivity metamaterials , 2006 .