Anisotropic glide-symmetric substrate-integrated-holey metasurface for a compressed ultrawideband Luneburg lens

被引:24
作者
Chen, Qiao [1 ]
Giusti, Federico [1 ]
Valerio, Guido [2 ,4 ]
Mesa, Francisco [3 ]
Quevedo-Teruel, Oscar [1 ]
机构
[1] KTH Royal Inst Technol, Div Electromagnet Engn, SE-10044 Stockholm, Sweden
[2] Sorbonne Univ, Lab G enie Elect & Elect Paris, CNRS, F-75252 Paris, France
[3] Univ Seville, ETS Ingn Inform at, Dept Appl Phys 1, Seville 41012, Spain
[4] Univ Paris Saclay, Lab G enie Elect & Elect Paris, Cen Sup elec, CNRS, F-91192 Gif Sur Yvette, France
关键词
D O I
10.1063/5.0041586
中图分类号
O59 [应用物理学];
学科分类号
摘要
An anisotropic unit cell based on glide symmetry is proposed for tailoring a metasurface that engineers an optically transformed Luneburg lens. Thanks to the optical transformation, the size of the lens is reduced by 25%. The proposed lens is ultrawideband, and it covers multi-octave frequency bands. The required constitutive materials are achieved in an air gap bounded by top and bottom glide-symmetric metasurfaces; i.e., they are off-shifted by half the period. Each surface is implemented in standard printed-circuit-board technology, and its unit cell consists of a grounded substrate with an elliptical holey top cladding surrounded by metalized through-vias. This technology, known as substrate-integrated-holes (SIHs), mimics the operation of holes drilled in a parallel plate but provides the higher effective refractive index required for lens compression. The SIH is attractive for practical applications since most of the energy propagates in the air gap between the two surfaces and, therefore, it features low dielectric losses. Thanks to glide symmetry, the proposed metasurface demonstrates a further enhanced effective refractive index with lower dispersion over an ultra-wide bandwidth in comparison to its non-glide counterpart. A multimodal transfer-matrix approach is here employed to carry out the Bloch analysis of the proposed SIH. Published under license by AIP Publishing.
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页数:5
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共 35 条
[1]   Glide-Symmetric Metallic Structures With Elliptical Holes for Lens Compression [J].
Alex-Amor, Antonio ;
Ghasemifard, Fatemeh ;
Valerio, Guido ;
Ebrahimpouri, Mahsa ;
Padilla, Pablo ;
Fernandez Gonzalez, Jose Manuel ;
Quevedo-Teruel, Oscar .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2020, 68 (10) :4236-4248
[2]   Bloch Analysis of Artificial Lines and Surfaces Exhibiting Glide Symmetry [J].
Bagheriasl, Mohammad ;
Quevedo-Teruel, Oscar ;
Valerio, Guido .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2019, 67 (07) :2618-2628
[3]   Efficient Leaky-Lens Antenna at 60 GHz Based on a Substrate-Integrated-Holey Metasurface [J].
Chen, Qiao ;
Mesa, Francisco ;
Padilla, Pablo ;
Yin, Xiaoxing ;
Quevedo-Teruel, Oscar .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2020, 68 (12) :7777-7784
[4]   Accurate Characterization and Design Guidelines of Glide-Symmetric Holey EBG [J].
Chen, Qiao ;
Mesa, Francisco ;
Yin, Xiaoxing ;
Quevedo-Teruel, Oscar .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2020, 68 (12) :4984-4994
[5]   Microwave edge modes on a metasurface with glide symmetry [J].
de Pineda, Julia D. ;
Hibbins, Alastair P. ;
Sambles, J. Roy .
PHYSICAL REVIEW B, 2018, 98 (20)
[6]   A broadband metasurface Luneburg lens for microwave surface waves [J].
de Pineda, Julia D. ;
Mitchell-Thomas, Rhiannon C. ;
Hibbins, Alastair P. ;
Sambles, J. Roy .
APPLIED PHYSICS LETTERS, 2017, 111 (21)
[7]   Slim Luneburg lens for antenna applications [J].
Demetriadou, Angela ;
Hao, Yang .
OPTICS EXPRESS, 2011, 19 (21) :19925-19934
[8]   Ultrawideband Anisotropic Glide-Symmetric Metasurfaces [J].
Ebrahimpouri, Mahsa ;
Quevedo-Teruel, Oscar .
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 2019, 18 (08) :1547-1551
[9]   Elliptical generalized Maxwell fish-eye lens using conformal mapping [J].
Eskandari, Hossein ;
Majedi, Mohammad Saeed ;
Attari, Amir Reza ;
Quevedo-Teruel, Oscar .
NEW JOURNAL OF PHYSICS, 2019, 21 (06)
[10]   Multi-Beam Multi-Layer Leaky-Wave SIW Pillbox Antenna for Millimeter-Wave Applications [J].
Ettorre, Mauro ;
Sauleau, Ronan ;
Le Coq, Laurent .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2011, 59 (04) :1093-1100