2-D Scannable 40-GHz Folded Reflectarray Fed by SIW Slot Antenna in Single-Layered PCB

Yang, Jiawei; Shen, Yizhu; Li-ning, Wang; Meng, Hongfu; Dou, Wenbin; Hu, Sanming

doi:10.1109/tmtt.2018.2818698

Cited by 47 publications

(11 citation statements)

References 17 publications

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“…Instead of using an open-ended waveguide as a feeding source, a planar patch antenna is adopted as it is expected to be integrated with the phase-shifting surfaces together, not adding an extra profile. Compared with the SIW slots and SIW aperture coupling antennas as the feeding sources for folded RA antennas [17], [20], a patch antenna can not only provide similar impedance bandwidth but also have a simple and easy method to adjust its impedance match. Fig.…”

Section: A Planar Feeding Sourcementioning

confidence: 99%

A Low-Profile and Beam-Steerable Transmitarray Antenna: Design, Fabrication, and Measurement [Antenna Applications Corner]

Mei

Zhang

Pedersen

2021

IEEE Antennas Propag. Mag.

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This paper describes the design, fabrication, and measurement of a low-profile and beam-steerable transmitarray (TA) antenna based on ray-folding principles. The proposed TA antenna consists of a planar feeding source, phase-shifting surfaces, and a metal plate as a reflector. The electromagnetic (EM) wave radiating from the planar feeding source would be reflected firstly by the metal plate, and then propagate through the phase-shifting surfaces to achieve a focused beam at broadside. In this configuration, the profile of the proposed TA antenna is decreased to half compared with a conventional TA antenna. To demonstrate the superiorities of the proposed TA antenna, the reflection coefficients, radiation patterns, and realized gains of three antennas, namely, the proposed TA antenna, a reflectarray (RA) antenna for reference, and a TA antenna for reference are simulated, compared, discussed, and measured. It is concluded that the proposed TA antenna has a comparable realized gain and lower profile. The simulated results reveal the proposed TA antenna has a realized gain of 24.8 dBi at 28 GHz with a profile of 20 mm (1.87λ0 at 28 GHz), resulting in an aperture efficiency of 31.3 %, which are experimentally verified. The proposed TA antenna is also expanded to achieve beam steering. A prototype of a beam-steerable TA antenna with five beams is fabricated and measured, where main beams at ± 16 o , ± 8 o , 0 o are observed with a gain variation of 2.4 dB and a broadside gain of 24.0 dBi corresponding to an aperture efficiency of 27 % at 27.2 GHz.

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Section: A Planar Feeding Sourcementioning

confidence: 99%

A Low-Profile and Beam-Steerable Transmitarray Antenna: Design, Fabrication, and Measurement [Antenna Applications Corner]

Mei

Zhang

Pedersen

2021

IEEE Antennas Propag. Mag.

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“…Therefore, a dual-polarized single-layer reflective unit cell is designed here to manipulate independently the orthogonal polarized waves. The rectangular patch elements [40] and single Jerusalem cross elements [43] are the most popularly employed in the single-layer designs of dual-polarized unit cells. However, those unit cells are not able to provide adequate phase coverage (< 360 degrees), and suffer from nonlinear slope of the phase responses, which leads to a relatively low aperture efficiency and a narrow bandwidth [36]- [41].…”

Section: B Design Of the Reflective Unit Cellmentioning

confidence: 99%

A 400-GHz High-Gain Quartz-Based Single Layered Folded Reflectarray Antenna for Terahertz Applications

Miao

Hao

Wang

et al. 2019

IEEE Trans. THz Sci. Technol.

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“…As a result, the total height of the folded reflectarray including spacing between the primary source and the reflecting surface can be reduced to half of the reflectarray without the polarizer. The folded reflectarray has been enhanced for broadband or dual band operation [42], [44], [46], [47] and beam scanning [45], [49]. Moreover, the folded reflectarray with a conformal polarizer [47] or a substrate integrated waveguide (SIW) polarizer [48] have been developed.…”

Section: Introductionmentioning

confidence: 99%

A Study on Scattering Performance of Reflectarray Element Covered by Dielectric Superstrate

Konno

Chen

2022

IEEE Trans. Antennas Propagat.

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In this paper, effect of a dielectric superstrate on scattering performance of reflectarray elements is clarified. At first, analytical electric field expressions of an infinite line current backed by a ground plane with the dielectric superstrate and so-called resonance conditions derived by Sugio et al., are reviewed. According to the electric field expressions and reciprocity, enhancement of the scattering field strength by the dielectric superstrate under the resonance conditions is expressed analytically. Since the scatterers are illuminated by the incident wave arriving from outside of the scatterers, the effect of its incident angle θi on the scattering field strength is also studied. Based on inequalities that are derived from the electric field expressions, range of θi for enhancing the scattering field strength by the dielectric superstrate under the resonance conditions is found. As a result, it is found that the range of θi is independent of εr when εr ≫ 1, where εr is relative permittivity of the dielectric superstrate. Numerical simulation is performed and it is demonstrated that the analytical fomulae derived here are useful for predicting the effect of the dielectric superstrate on practical reflect array elements such as dipole, patch and loop elements. Results and theories demonstrated in this paper give quantitative guidelines on designing the reflectarray elements covered by the superstrate from the viewpoints of angle dependance, geometry, and permittivity of the superstrate.

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2-D Scannable 40-GHz Folded Reflectarray Fed by SIW Slot Antenna in Single-Layered PCB

Cited by 47 publications

References 17 publications

A Low-Profile and Beam-Steerable Transmitarray Antenna: Design, Fabrication, and Measurement [Antenna Applications Corner]

A Low-Profile and Beam-Steerable Transmitarray Antenna: Design, Fabrication, and Measurement [Antenna Applications Corner]

A 400-GHz High-Gain Quartz-Based Single Layered Folded Reflectarray Antenna for Terahertz Applications

A Study on Scattering Performance of Reflectarray Element Covered by Dielectric Superstrate

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