Wideband and High Cross-Polarization Discrimination 45° Linearly Polarized Slot Array Antenna Without Cavity-Backed Layer

Zhou, Haijiao; Lu, Yun; You, Qingchun; Wang, Yi; Huang, Jifu

doi:10.1109/lawp.2022.3187952

Cited by 4 publications

(1 citation statement)

References 24 publications

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“…The development of dual-polarization-multiplexed passive RIS hardware is also feasible, as evidenced by various prototypes [20]- [23]. For demonstration, we utilize a 4-GHz commercial prototype from Actenna Technology, as depicted in Fig.…”

Section: B Dual-polarization-multiplexed Rismentioning

confidence: 99%

Active Reconfigurable Intelligent Surface: Fully-Connected or Sub-Connected?

et al. 2022

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Reconfigurable intelligent surfaces (RISs) are promising candidate for the 6G communication. Recently, active RIS has been proposed to compensate the multiplicative fading effect inherent in passive RISs. However, conventional distributed active RISs, with at least one amplifier per element, are costly, complex, and power-intensive. To address these challenges, this paper proposes a novel architecture of active RIS: the centralized active RIS (CA-RIS), which amplifies the energy using a centralized amplifying reflector to reduce the number of amplifiers. Under this architecture, only as low as one amplifier is needed for power amplification of the entire array, which can eliminate the mutual-coupling effect among amplifiers, and significantly reduce the cost, noise level, and power consumption. We evaluate the performance of CA-RIS, specifically its path loss, and compare it with conventional passive RISs, revealing a moderate amplification gain. Furthermore, the proposed CA-RIS and the path loss model are experimentally verified, achieving a 9.6 dB net gain over passive RIS at 4 GHz. The CA-RIS offers a substantial simplification of active RIS architecture while preserving performance, striking an optimal balance between system complexity and the performance, which is competitive in various scenarios.

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Section: B Dual-polarization-multiplexed Rismentioning

confidence: 99%

Active Reconfigurable Intelligent Surface: Fully-Connected or Sub-Connected?

et al. 2022

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High-order-mode cavity fed 45° linear polarized antenna for 5G applications

Yang,

Qi,

Zhao

et al. 2024

Int. J. Microw. Wireless Technol.

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In this paper, a high-order-mode (HOM) (TE330) cavity-fed 45° linear polarized 6×6 slot array antenna is proposed. The 45° linear polarization is achieved by introducing asymmetric cross slots on the HOM cavity, resulting in low profile and wide bandwidth. The antenna array was verified using standard printed circuit board technology. Measured results show that the impedance bandwidth ( $|S_{11}|\le$ −10 dB) is 13.9% (36.98–42.92 GHz), and the peak gain is 19.3 dBi with a 3-dB gain bandwidth of 13.6%. Attributed to its simple structure, low profile, and wide bandwidth, the presented antenna is a good candidate for 5G applications.

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