Compact High-Performance Lens Antenna Based on Impedance-Matching Gradient-Index Metamaterials

Na, Zhang; Jiang, Wei; Feng, Hui; Tang, Wenxuan; Cui, Tie Jun

doi:10.1109/tap.2018.2880115

Cited by 64 publications

(40 citation statements)

References 23 publications

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“…It has attracted much attention because of its novel phenomenon of abnormal reflection and transmission As a quasi‐periodic structure array with sub‐wavelength size, the metasurface can not only flexibly control the amplitude, phase, and polarization of electromagnetic waves, but also has the advantages of small size, low loss, and easy manufacturing. In recent years, it has become a hotspot and frontier in the research fields such as microwave and even light waves, especially in the aspects of absorbers, planar lenses, vortex generators, and so forth 2–6 . In particular, the phase gradient metasurfaces (GMs) can be used to refraction or offset the propagation direction of the reflected wave or the transmitted wave, which can be used to design high gain antenna.…”

Section: Introductionmentioning

confidence: 99%

Design of transmittarray feed by filtering dielectric antenna for 5G

Song¹,

Zhu²,

Pan³

2020

Int J RF Microw Comput Aided Eng

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In this article, a high gain transmittarray antenna for 5G is presented. The transmittarray antenna is composed of an ultra‐thin transmitarray and its feed structure of the filtering dielectric antenna. The ultra‐thin transmitarray based on cross‐shaped metasurface is designed to realize the gradient distribution of phase covering the range of 0~2 π. The compact low temperature co‐fired ceramic dielctric antenna array feed by subtrate integrated waveguide powder divider is exploited as the feed of the transmittarray. The experimental results show the metasurface of the structure has obvious convergence effect on the radiation energy of the antenna, and the directivity of the antenna is greatly enhanced. The sidelobe energy is effectively suppressed and the peak gain of the antenna is increased from 11.47 dB to 22.8 dB at the central frequency of 28.0 GHz. The high gain and small size make the transmittarray antenna suitable for application in 5G wireless communication.

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Section: Introductionmentioning

confidence: 99%

Design of transmittarray feed by filtering dielectric antenna for 5G

Song¹,

Zhu²,

Pan³

2020

Int J RF Microw Comput Aided Eng

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“…Metamaterials (MTMs) are one of the best possible solutions for design and development of miniaturized systems such as antennas, filters, absorbers, lenses, and clocking and so on. MTMs provide the remarkable inherent features, which are not realized in traditional right‐handed (RH) materials.…”

Section: Introductionmentioning

confidence: 99%

Coplanar waveguide‐fed electrically small dual‐polarized short‐ended zeroth‐order resonating antenna using Ω‐shaped capacitor and single‐split ring resonator for GPS/WiMAX/WLAN/C‐band applications

Ameen

Kalraiya

Chaudhary

2019

Int J RF Microw Comput Aided Eng

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This work explains the design and analysis of a triple‐band electrically small (ka = 0.56 < 1) zeroth‐order resonating (ZOR) antenna with wideband circular polarization (CP) characteristics. The antenna compactness is obtained due to ZOR frequency of composite right/left‐handed (CRLH) transmission line (TL) and wideband CP radiation are achieved due to the introduction of single‐split ring resonator and asymmetric coplanar waveguide fed ground plane. The proposed antenna obtains an overall electrical size including the ground plane of 0.124 λ0 × 0.131 λ0 × 0.005 λ0 at 1.58 GHz and physical dimension of 23.7 × 25 × 1 mm3 are achieved. The antenna provides a size reduction of 44.95% compared to a conventional monopole antenna. The novelty behind the ohm‐shaped capacitor is the generation of extra miniaturization with better antenna compactness. The antenna provides dual‐polarized radiation pattern with linear polarization radiation at 1.58 and 3.54 GHz, wideband CP radiation at 5.8 GHz. The antenna measured results shows good impedance bandwidth of 5%, 6.21%, and 57.5% for the three bands centered at 1.58, 3.54, and 5.8 GHz with a wider axial ratio bandwidth (ARBW) of 25.47% is obtained in the third band. The antenna provides a higher level of compactness, wider ARBW, good radiation efficiency, and wider S11 bandwidth. Hence, the proposed antenna is suitable for use in GPS L1 band (1.565‐1.585 GHz), WiMAX 3.5 GHz (3.4‐3.8 GHz) GHz, WLAN 5.2/5.8 GHz (5.15‐5.825 GHz), and C‐band (4‐8 GHz) wireless application systems.

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“…Furthermore, based on the theory of TO and geometric optics (GO), metamaterials with specific spatial distribution of electromagnetic parameters provide a potent and powerful tool to control the propagation of EM waves, leading to many interesting physical phenomena . Various metamaterial‐based devices have emerged, such as invisible cloaks, optical illusion devices, anisotropic MTMs to control the polarization of EM waves, MTMs absorbers, ferrite‐based MTMs, TO lenses, and gradient‐refractive‐index (GRIN) lens antennas, which revealed the great potential of metamaterials in the future. In this way, a new era has been opened for metamaterials…”

Section: Introductionmentioning

confidence: 99%

Microwave Metamaterials

Chen

Tang

et al. 2019

Annalen der Physik

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Metamaterials (MTMs) are artificial materials composed of subwavelength particles, which are engineered to achieve various electromagnetic (EM) responses. Since the first practical realization and experimental verification of MTMs by Pendry et al. in the late 1990s, great efforts have been made in theoretical study as well as practical utilizations. Among them, the effective medium theory provides a basis for the description as well as an accurate method for the design of MTMs, and leads to the development of many novel devices with interesting functionalities. With the employment of transformation and geometric optics, more high-performance engineering applications have been realized using MTMs. Recently, the concept of metasurfaces has been proposed, which further promotes the practical applications of advanced MTMs. Herein, the effective medium theory is first introduced. After that, typical devices and applications based on conventional bulk MTMs and newly-conceived metasurfaces are summarized to demonstrate the flexible capability of microwave MTMs in the manipulation of EM waves.Metamaterials are different from other periodic structures such as photonic crystals and frequency-selective surfaces (FSSs) because their unit cells are much smaller than the free-space wavelength. The subwavelength nature enables the metamaterials to Tianyi Chen received his B.Sc. degree from Southeast University, Nanjing, China, in 2013. He is currently working toward a Ph.D. degree in State Key Laboratory of Millimeter Waves at Southeast University. His research interests include metamaterials metasurfaces and antenna arrays. Wenxuan Tang received her B.Sc. and M.Sc. degrees from Southeast University, Nanjing, China, in Cheung-Kong Professor. His research interests include metamaterials, plasmonics in microwave, and computational electromagnetics.be treated as a homogenous effective medium and characterized by effective constitutive parameters. In early researches, closed formed expressions for the constitutive parameters were obtained in static and quasistatic limits, [86][87][88] which usually takes the form of Lorentz-Drude models. These results provided some intuition of the physical features but cannot quantitatively characterize metamaterials. In ref.[18], a numerical approach based on scattering (S) parameter retrieval was proposed to obtain the effective permittivity and permeability for periodic metamaterial structures. This method is accurate in the derivation of effective parameters. However it relies on full-wave simulation of metamaterial structures and hence is inefficient and difficult to be used in the design of large-volume metamaterials.In 2007, a general effective medium theory [17] was proposed by Liu et al., which sets up a relationship between particle responses and macroscopic behaviors of metamaterials. A closed form expression was provided to modify the Lorentz-Drude model, which takes the effects of spatial dispersion into account

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Compact High-Performance Lens Antenna Based on Impedance-Matching Gradient-Index Metamaterials

Cited by 64 publications

References 23 publications

Design of transmittarray feed by filtering dielectric antenna for 5G

Design of transmittarray feed by filtering dielectric antenna for 5G

Coplanar waveguide‐fed electrically small dual‐polarized short‐ended zeroth‐order resonating antenna using Ω‐shaped capacitor and single‐split ring resonator for GPS/WiMAX/WLAN/C‐band applications

Microwave Metamaterials

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