Polarization-independent broadband meta-surface for bifunctional antenna.

Functional integration is crucial and has become a research interest in recent years; however, available efforts suffer from low efficiency and narrow operating bandwidth. Here, we propose a novel strategy to design bifunctional meta-surface with high efficiency and largely enhanced bandwidth in reflection geometry. For demonstration, we designed and fabricated a bifunctional meta-surface which enables both focusing and anomalous reflection under different polarizations. The working bandwidth is significantly extended by using the dual-resonant three-turn meander-line resonator (TMLR) element which provides an almost consistent phase response within a large frequency interval. For potential applications, we engineered a bifunctional antenna by launching the designed meta-surface with proper feed sources. Numerical and experimental results coincide well, indicating bifunctionalities of high gain pencil-beam radiation (reflectarray) and beam steering radiation with comparable performances. Our results can stimulate the realizations of high-performance meta-surfaces and antenna systems.

[1]  Xianzhong Chen,et al.  Longitudinal Multifoci Metalens for Circularly Polarized Light , 2015 .

[2]  C. Pfeiffer,et al.  Metamaterial Huygens' surfaces: tailoring wave fronts with reflectionless sheets. , 2013, Physical review letters.

[3]  Guangming Wang,et al.  Superscatterer Illusions Without Using Complementary Media , 2014 .

[4]  J. Pendry,et al.  Negative refraction makes a perfect lens , 2000, Physical review letters.

[5]  Tomislav Debogovic,et al.  Low Loss MEMS-Reconfigurable 1-Bit Reflectarray Cell With Dual-Linear Polarization , 2014, IEEE Transactions on Antennas and Propagation.

[6]  Zhi Ning Chen,et al.  Design and Modeling of Spoof Surface Plasmon Modes-Based Microwave Slow-Wave Transmission Line , 2015, IEEE Transactions on Microwave Theory and Techniques.

[7]  Shuangchun Wen,et al.  Realization of Tunable Photonic Spin Hall Effect by Tailoring the Pancharatnam-Berry Phase , 2013, Scientific Reports.

[8]  Hossein Mosallaei,et al.  Optical metasurfaces for beam scanning in space. , 2014, Optics letters.

[9]  Fan Yang,et al.  Design and Experiment of a Single-Feed Quad-Beam Reflectarray Antenna , 2012, IEEE Transactions on Antennas and Propagation.

[10]  Qi Luo,et al.  Design and Analysis of a Reflectarray Using Slot Antenna Elements for Ka-band SatCom , 2015, IEEE Transactions on Antennas and Propagation.

[11]  Guangming Wang,et al.  Three‐Dimensional Super Lens Composed of Fractal Left‐Handed Materials , 2013 .

[12]  X. Wan,et al.  Planar bifunctional Luneburg‐fisheye lens made of an anisotropic metasurface , 2014 .

[13]  T. Cui,et al.  Three-dimensional broadband and broad-angle transformation-optics lens. , 2010, Nature communications.

[14]  N. Yu,et al.  Light Propagation with Phase Discontinuities: Generalized Laws of Reflection and Refraction , 2011, Science.

[15]  Qiaofeng Tan,et al.  Three-dimensional optical holography using a plasmonic metasurface , 2013, Nature Communications.

[16]  H. Mosallaei,et al.  Birefringent reflectarray metasurface for beam engineering in infrared. , 2013, Optics letters.

[17]  Xin Li,et al.  Flat metasurfaces to focus electromagnetic waves in reflection geometry. , 2012, Optics letters.

[18]  Qiang Cheng,et al.  Anisotropic coding metamaterials and their powerful manipulation of differently polarized terahertz waves , 2016, Light: Science & Applications.

[19]  Tie Jun Cui,et al.  Combined System for Efficient Excitation and Capture of LSP Resonances and Flexible Control of SPP Transmissions , 2015 .

[20]  Long Li,et al.  Broadband Microstrip Beam Deflector Based on Dual-Resonance Conformal Loops Array , 2014, IEEE Transactions on Antennas and Propagation.

[21]  Guangming Wang,et al.  X-Band Phase-Gradient Metasurface for High-Gain Lens Antenna Application , 2015, IEEE Transactions on Antennas and Propagation.

[22]  Xiaoliang Ma,et al.  A planar chiral meta-surface for optical vortex generation and focusing , 2015, Scientific Reports.

[23]  Tie Jun Cui,et al.  Independent Controls of Differently-Polarized Reflected Waves by Anisotropic Metasurfaces , 2015, Scientific Reports.

[24]  David R. Smith,et al.  Controlling Electromagnetic Fields , 2006, Science.

[25]  Qiaofeng Tan,et al.  Helicity dependent directional surface plasmon polariton excitation using a metasurface with interfacial phase discontinuity , 2013, Light: Science & Applications.

[26]  P. Genevet,et al.  Multiwavelength achromatic metasurfaces by dispersive phase compensation , 2014, Science.

[27]  Guang-Ming Wang,et al.  Directivity Improvement of Vivaldi Antenna Using Double-Slot Structure , 2013, IEEE Antennas and Wireless Propagation Letters.

[28]  He-Xiu Xu,et al.  Ultra-Thin Polarization Beam Splitter Using 2-D Transmissive Phase Gradient Metasurface , 2015, IEEE Transactions on Antennas and Propagation.

[29]  Shojiro Kawakami,et al.  Experimental verification of a form‐birefringent polarization splitter , 1991 .

[30]  T. Cui,et al.  Independent control of differently-polarized waves using anisotropic gradient-index metamaterials , 2014, Scientific Reports.

[31]  Jose A. Encinar,et al.  Dual-polarisation reflectarray made of cells with two orthogonal sets of parallel dipoles for bandwidth and cross-polarisation improvement , 2014 .

[32]  Guoxing Zheng,et al.  Helicity multiplexed broadband metasurface holograms , 2015, Nature Communications.