Dual-Layer Transmitarray Antenna With High Transmission Efficiency

Zhang, Xingliang; Yang, Fan; Xu, Shenheng; Aziz, Abdul; Li, Maokun

doi:10.1109/tap.2020.2989555

Cited by 63 publications

(23 citation statements)

References 33 publications

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“…Although single-layer substrate is also used in refs. [13,16,[30][31][32], none of them focus on the wide-angle beam scanning function at two bands simultaneously. Moreover, the scanning coverages in other works are less than AE45 , which requires at least four sections for realizing the full 360 scanning.…”

Section: Resultsmentioning

confidence: 99%

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Ultrathin Dual‐Band Wide‐Angle Beam Scanning Metalens Based on High‐Efficiency Meta‐Atom

Wang

Chen

Gao

et al. 2022

Advanced Photonics Research

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Metasurfaces composed of planar subwavelength‐scaled meta‐atoms demonstrate unprecedented wavefront manipulation capabilities. However, the wavelength‐dependent property of the metasurface could severely reduce the design freedom, and most metasurfaces require multilayer structure for high efficiency. Herein, a single‐layered‐substrate meta‐atom is proposed to achieve independent phase manipulations as well as high transmission efficiencies at two frequencies. Specifically, the full 2π phase coverages can be individually realized through rotating the corresponding resonators. As a proof‐of‐concept demonstration, a dual‐band high‐efficiency metalens with wide field‐of‐view (FoV) under the circular polarization incidence is simulated, fabricated and measured at Ka‐band for satellite communications. Both simulation and experimental results agree well with each other, demonstrating that wide scanning coverages of ±60° can be achieved at both 20 and 30 GHz. The proposed method can be a competitive candidate for designing dual‐band high‐efficiency meta‐devices.

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Section: Resultsmentioning

confidence: 99%

“…A wide‐band TA based on bilayer unit‐cell is proposed in ref. [30], wherein an aperture efficiency of 60.2% was experimentally demonstrated at K‐band. In ref.…”

Section: Introductionmentioning

confidence: 99%

Ultrathin Dual‐Band Wide‐Angle Beam Scanning Metalens Based on High‐Efficiency Meta‐Atom

Wang

Chen

Gao

et al. 2022

Advanced Photonics Research

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show abstract

“…The maximum bandwidth of 16.8% is related to Reference 6 with 46.5% efficiency. Reference 9 reached the highest efficiency with a value of 60.2%, although the antenna bandwidth is only 9.5%.…”

Section: Introductionmentioning

confidence: 99%

“…In References 5–11, multi‐layer substrates including dielectric and metal have been used to achieve the full 360° phase correction coverage. In sources 5–11, multilayers including dielectric and metal are used to achieve a complete 360° phase correction coating.…”

Section: Introductionmentioning

confidence: 99%

High efficiency and gain bandwidth transmitarray antenna based on slow wave structure

Eskandari

Hassani

2021

Int J RF Microw Comput Aided Eng

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In this article, corrugated conductor plates with slow wave properties are used as slow wave unit cell structures to increase the aperture efficiency of the transmitarray antenna. The slow wave structure is composed of a simple conductive plate and a corrugated conductor plate facing each other. Two types of unit cells are considered for the design of the transmitarray antenna. In the first type, the spacing and height of the corrugated sections are constant, and only by changing the number of the corrugation the phase shift is created. In the second type, the distance of the corrugated sections and the number of the corrugation is constant, and only by varying the corrugated height, the phase shift is controlled. These slow wave structures can easily cover 360° and are also suitable for large transmitarray. An array of such two types of slow wave unit cell structure is placed in front of the horn antenna and the aperture efficiency of the antenna is improved by the required phase correction. The transmitarray antenna based on the second type of the unit cell is fabricated and measurement results indicate that the transmitarray antenna has a maximum aperture efficiency of 89.4% at the frequency of 10.5 GHz and 1‐dB gain bandwidth of 30%.

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“…The simulated and measured results show that the proposed antenna has excellent electromagnetic wave convergence. [11] 0.8 dielectric screw Gain improvement [12] 0.9 dielectric screw Gain improvement [13] 0.8 dielectric screw Gain improvement [14] 1 Dielectric substrate Gain improvement [15] 0.8 Dielectric substrate Gain improvement [16] 0…”

Section: Introductionmentioning

confidence: 99%

All Metal Focusing Transmitarray Antenna for High-Temperature Plasma Diagnosis

2021

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In this paper, an all metal focusing transmitarray antenna using a II-shaped slot element is proposed. The transmitarray is formed by stacking four identical metal phase shift layers and three identical square waveguide layers on each other. To meet the requirements of high-temperature plasma transmission diagnosis, a 2024 aluminum alloy material is used. The simulated results indicate that, unlike the feed antenna, the proposed antenna can concentrate most of the electric field energy into a small area. To verify the design, a fabricated prototype was processed and measured in the C-band. The results show that the proposed antenna achieves an average focal spot diameter of 1.3 λ0 at 5.7 GHz and it can work in the 5.4-6.0 GHz band. Furthermore, all metal focusing transmitarray antennas have great potential for high-temperature plasma diagnosis.INDEX TERMS Focusing; high-temperature plasma diagnosis; transmitarray antenna; focal spot.

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Dual-Layer Transmitarray Antenna With High Transmission Efficiency

Cited by 63 publications

References 33 publications

Ultrathin Dual‐Band Wide‐Angle Beam Scanning Metalens Based on High‐Efficiency Meta‐Atom

Ultrathin Dual‐Band Wide‐Angle Beam Scanning Metalens Based on High‐Efficiency Meta‐Atom

High efficiency and gain bandwidth transmitarray antenna based on slow wave structure

All Metal Focusing Transmitarray Antenna for High-Temperature Plasma Diagnosis

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