Article
Optics
Zexu Guo, Yulong Zhou, Huanhuan Yang, Sijia Li, Tong Li, Jianghao Tian, Xiangyu Cao
Summary: In this paper, a dual-band electronically reconfigurable transmitarray (ERTA) is designed and demonstrated with the capability of fully independent beam manipulation in two divided bands. The ERTA construction includes two kinds of orthogonally polarized reconfigurable elements and utilizes polarization isolation and a backed cavity for low coupling. A hierarchical bias method is used to separately control the 1-bit phase in each band.
Article
Computer Science, Information Systems
Reda Madi, Antonio Clemente, Ronan Sauleau
Summary: This paper presents a novel design and experimental characterization of a dual-band, shared aperture transmitarray operating in dual linear polarization at K/Ka-band. It is based on a 1-bit unit-cell realized using five metal layers and demonstrates low transmission loss (< 2 dB). The proposed transmitarray is able to shape the beam independently in both K- and Ka-bands by combining the polarization rotation method and the stacked patch architecture. Experimental results show excellent agreement with numerical and full-wave electromagnetic simulations. The antenna system is a low-cost and compact solution for future vehicular broadband SatCom applications.
Article
Engineering, Electrical & Electronic
Wassim Saleh, Yoann Letestu, Ronan Sauleau, Eduardo Motta Cruz
Summary: A low-cost dual linearly polarized transmitarray antenna designed for 5G and beyond networks at D-band was presented. The antenna achieved a peak gain of 32 dBi at 150 GHz with excellent aperture efficiency. The measured radiation patterns showed good agreement with simulated results, demonstrating the robust performance of the antenna.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2021)
Article
Optics
Weixu Yang, Ke Chen, Shufang Dong, Linxiao Wu, Kai Qu, Junming Zhao, Tian Jiang, Yijun Feng
Summary: The study proposes a full-space dual-helicity decoupled metasurface for designing a multi-folded reflective antenna in the microwave regime. The metasurface enables independent tailoring of electromagnetic waves with different circular-polarized wavefronts in both reflection and transmission channels, offering opportunities for high-performance functional devices.
Article
Engineering, Electrical & Electronic
Jianfeng Zhu, Yang Yang, Shaowei Liao, Quan Xue
Summary: This paper proposes a dual-band antenna design by hybridizing a folded reflectarray antenna (FRA) and a folded transmitarray antenna (FTA). By incorporating polarization rotation and polarization twisting techniques in different frequency bands, the antenna achieves high-gain radiation in both frequency bands.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Xi Wang, Yang Cheng, Yuandan Dong
Summary: A high-gain dual-polarized all-metallic transmitarray (TA) antenna with wide gain bandwidth is proposed using quadruple-ridged waveguide (QRW). The QRW has a symmetrical structure and allows for dual-polarization and 2-D beam scanning. The fabricated TA antenna achieves high gain, aperture efficiency, and broadside gain bandwidth at 30 GHz, with a 2-D beam scanning range of +/- 18 degrees.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2022)
Article
Chemistry, Analytical
Hao-Zheng Yang, Shi-Wei Qu
Summary: In this article, a high-gain millimeter-wave transmitarray antenna (TAA) with scanning ability is developed using an array feed as the primary emitter. The addition of defocused phases to the phase distribution of the lens enables energy dispersion into the scanning scope. The proposed beam forming algorithm improves the scanning capability of the transmitarray. A transmitarray based on square waveguide elements achieves a high gain of 37.95 dBi at 160 GHz, despite a 2.2 dB error compared to the calculation in the operating band of 150-170 GHz. The transmitarray demonstrates its potential for generating scannable high-gain beams in the millimeter-wave band.
Article
Engineering, Electrical & Electronic
Mohammad Mahdi Honari, Konstantinos Mavrakakis, Hung Luyen, John H. Booske, Nader Behdad
Summary: This paper presents a dual-band transmitarray (TA) that uses ultrathin polarization-rotating spatial phase shifters. The TA provides independent polarization rotation in two different frequency bands, allowing for beam collimation at both bands. The proposed ultrathin spatial phase shifter results in a compact TA with high gain and narrow bandwidth.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Seyed Hashem Ramazannia Tuloti, Zahra Mousavirazi, Arun Kesavan, Tayeb A. Denidni
Summary: In this paper, a dual-polarized transmitarray antenna at ka-band has been designed and fabricated with excellent performance at 28 GHz. The measured results show good agreement with simulated results, indicating satisfactory performance of the designed antenna.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Hisamatsu Nakano, Tomoki Abe, Amit Mehta, Junji Yamauchi
Summary: This article discusses the isolated gain enhancement (IsoGE) by inserting a parasitic ring or patch into the open space of a metaloop antenna. The analysis shows that both circular and square parasitic patches can effectively increase the small gain and meet the requirements of axial ratio and VSWR within certain frequency ranges.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Haoyu Lei, Ying Liu, Yongtao Jia, Zhenzhen Yue, Xing Wang
Summary: This paper presents a low-profile, compact, high gain dual-band and dual-circularly polarized folded transmitarray antenna (FTA) with independent beam control. By controlling the phase distribution and circular polarization, the proposed antenna can radiate left-hand and right-hand circularly polarized waves simultaneously, with smaller profile, compact structure, low cost, and easy integration compared to traditional antennas.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Multidisciplinary Sciences
Majid Karimipour, Mohammad Bagher Heydari, Iman Aryanian
Summary: This paper introduces a novel multi-state coding metasurface that enhances frequency bandwidth and aperture efficiency. The proposed metasurface consists of only two dielectric layers and achieves eight states of phase quantization. A 25 x 25-element transmissive focusing metasurface was designed, fabricated, and tested, showing a 1-dB gain bandwidth of 12.3-16.5 GHz and a maximum aperture efficiency of 53.6%.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Electrical & Electronic
Pei Yang, Ruirong Dang, Lipin Li
Summary: A polarization-twisting metasurface antenna (PTMA) is proposed to generate dual-band dual-circularly polarized (CP) radiation in the Ku-band. By integrating a dual-linear-to-circular polarization converter (DLCPC) with a linear polarization conversion metasurface (LPCM), the PTMA is capable of realizing both left hand CP (LHCP) and right hand CP (RHCP) radiation.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Physics, Applied
Lin-Xiao Wu, Ke Chen, Wei-Xu Yang, Yi-Lin Zheng, Junming Zhao, Yijun Feng
Summary: This paper proposes a novel metasurface (MS) and a generalized dual-circular-polarized (CP) decoupled modulating method. The MS can achieve high-efficiency dual-spin transmissions with equal-magnitude under left-handed circular polarization (LCP) incidence across 9-12.5 GHz. By rotating the receiver and transmitter patches separately, totally decoupled and dispersion-less phase modulations for transmitted dual-spin waves can be obtained. The proposed wideband and high-gain dual-CP multi-beam transmitarray antennas (TAs) have promising prospects for various applications.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Computer Science, Information Systems
MingBo Cai, Zehong Yan, Fangfang Fan, Shuyang Yang, Xi Li
Summary: The proposed double-layer Ku/K dual-band TA shows good performance in both Ku and K bands, making it suitable for millimeter wave wireless communication systems.
