Metasurface-based wideband, low-profile, and high-gain antenna
TL;DR: In this article, a dual-layer metasurface-based antenna with high gain and low profile was proposed for wideband, low-profile, and high gain antenna.
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Abstract: A wideband, low-profile, and high-gain antenna loaded with a dual-layer metasurface is proposed in this study. The metasurface consists of two metallic layers printed on two dielectric layers, in which each metallic layer contains an array of 4×4 square patch cells. The proposed antenna is fed by an aperture coupled layer under the metasurface. This design makes the antenna work at two different modes with different resonant frequencies close to each other, to enhance the bandwidth. To achieve the best bandwidth performance, a genetic algorithm is adopted to optimise the geometrical parameters of this antenna. This metasurface-based antenna maintains a low profile of 0.09λ
0
at 5 GHz, meanwhile yields wideband characteristics for both the impedance and gain bandwidth. The -10 dB impedance bandwidth of the proposed antenna is about 44% (4.08-6.38 GHz) and the 3 dB gain bandwidth reaches 45% (4.16-6.56 GHz) with a peak realised gain of 11.6 dBi. A prototype of the antenna is fabricated and the measured results demonstrate the authors' design.
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Citations
A Low-Profile Wideband Hybrid Metasurface Antenna Array for 5G and WiFi Systems
TL;DR: A hybrid metasurface (HMS) is proposed to form a low-profile wideband antenna array covering both fifth-generation (5G) sub 6 GHz and WiFi bands and the boresight gain is greater than 8.4 dBi.
87
Low-profile high-gain wideband multi-resonance microstrip-fed slot antenna with anisotropic metasurface
TL;DR: A low-profile, high-gain, wideband microstrip-fed slot antenna is proposed, featuring an anisotropic metasurface and aperture coupled structure, achieving a 56.1% impedance bandwidth and 42.2% 3-dBi gain bandwidth from 3.32 to 5.91 GHz.
53
Dual-band high-gain microstrip antenna with a reflective focusing metasurface for linear and circular polarizations
Jinxiu Wang,Jingcheng Zhao,Yongzhi Cheng,Hui Luo,Fu-sheng Chen +4 more
- 01 Sep 2022
TL;DR: In this article , a dual-band high-gain microstrip antenna with a reflective metasurface (MS) was proposed, which can focus linear polarization (LP) and circular polarization (CP) waves at 5 GHz and 11 GHz, respectively, with relatively low gain of about 5.8 dBi and 5.4 dBic, respectively.
14
Broadband Metasurface Antenna Using Hexagonal Loop-Shaped Unit Cells
TL;DR: In this article, a broadband metasurface antenna with a novel hexagonal loop-shaped unit cell structure is presented, which can achieve 56.3% fractional bandwidth and a gain ranging from 7 to 11 dBi.
References
An Overview of the Theory and Applications of Metasurfaces: The Two-Dimensional Equivalents of Metamaterials
Christopher L. Holloway,Edward F. Kuester,Joshua A. Gordon,John F. O'Hara,James C. Booth,David R. Smith +5 more
TL;DR: Metamaterials are typically engineered by arranging a set of small scatterers or apertures in a regular array throughout a region of space, thus obtaining some desirable bulk electromagnetic behavior as mentioned in this paper.
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A metamaterial for directive emission.
TL;DR: It is shown that under proper conditions the energy radiated by a source embedded in a slab of metamaterial will be concentrated in a narrow cone in the surrounding media.
Metamaterial-Based Low-Profile Broadband Mushroom Antenna
TL;DR: In this paper, a metamaterial-based broadband low-profile mushroom antenna is presented, which is formed using an array of mushroom cells and a ground plane, and fed by a microstrip line through a slot cut onto the ground plane.
388
Metamaterial-Based Low-Profile Broadband Aperture-Coupled Grid-Slotted Patch Antenna
TL;DR: In this paper, a metamaterial-based broadband low-profile grid-slotted patch antenna is presented, where a periodic array of series capacitor-loaded patch cells is formed, and excited through the coupling aperture in a ground plane right underneath and parallel to the slot at the center of the patch.
341
A Low-Profile High-Gain and Wideband Filtering Antenna With Metasurface
TL;DR: In this article, a planar metasurface (MS)-based filtering antenna with high selectivity is investigated in this communication, which consists of nonuniform metallic patch cells, and it is fed by two separated microstrip-coupled slots from the bottom.
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