Article
Engineering, Electrical & Electronic
Andreas Ericsson, Daniel Sjoberg, Giampiero Gerini, Cecilia Cappellin, Frank Jensen, Peter Balling, Nelson J. G. Fonseca, Peter de Maagt
Summary: An antenna system using CPSS was proposed to achieve CP equivalent to LP reflectors. The CPSS characteristics were computed through full-wave simulations and reflector surface shapes were optimized in TICRA POS software. Experimental results highlighted challenges in producing electrically large multilayer curved surfaces.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Li Guo
Summary: This article presents a compact wide-beam endfire antenna with ground radiation mode and vertically polarized mode for circular polarization (CP). The antenna is constructed based on a configuration of coupled-mode patch antenna (CMPA), and uses various techniques such as crossed ground slot and offset probe feed to achieve wide-beam circularly polarized radiation.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
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
Engineering, Electrical & Electronic
Guan-Tao Chen, Yong-Chang Jiao, Gang Zhao, Chuan-Wei Luo
Summary: This paper presents a wideband high-efficiency circularly polarized folded reflectarray antenna based on CP selective surface (CPSS). The antenna design includes a simple CPSS, a wideband reflectarray plane, and a wideband planar CP antenna. The measured results show that the fabricated prototype has good performance with high gain, bandwidth, axial-ratio, and aperture efficiency, making it potentially valuable for wireless communication systems.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Computer Science, Information Systems
Mohamed El Hammoumi, Faisel Tubbal, Najiba El Amrani El Idrissi, Panagiotis Ioannis Theoharis, Suhila Abulgasem, Raad Raad
Summary: This paper presents a novel wideband circularly polarized CPW-fed printed monopole antenna with an AMC reflector, which offers a wide impedance bandwidth and 3 dB axial ratio bandwidth. The proposed antenna has a smaller physical size while providing higher gain compared to other designs. The measured results show a wide impedance bandwidth of 97.5% (6.1-13.9 GHz), a wide 3 dB axial ratio bandwidth of 98.75% (5.1-13 GHz), and a total measured gain of 7.3 dBi at 8 GHz.
Article
Engineering, Electrical & Electronic
Xiaomu Hu, Sen Yan, Jiahao Zhang, Vladimir Volski, Guy A. E. Vandenbosch
Summary: The proposed wearable antenna features an omni-directional circularly polarized design, optimizing performance for on-body communication. Operating in the 5 GHz range, it provides a robust circular polarization pattern with omni-directional coverage.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Weixu Yang, Ke Chen, Xinyao Luo, Kai Qu, Junming Zhao, Tian Jiang, Yijun Feng
Summary: A novel high-efficiency polarization-selective bifunctional metasurface has been proposed, which can selectively manipulate left-handed and right-handed circularly polarized light. Through numerical simulations and experiments, it has been shown that the proposed metasurface can be applied to high-gain antennas in millimeter-wave communication systems.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Yara Ashraf Kamel, Hesham A. Mohamed, Hala ELsadek, Hadia Mohamed ELhennawy
Summary: This letter presents a triple-band antenna with CP behavior for bio-telemetry applications. The designed implantable antenna exhibits CP behavior at the Industrial, Scientific, and Medical bands as well as the midfield band. The compact size of the antenna is 50.8 mm³. Specific absorption rate and link margin calculations are included for health safety and reliable communication considerations.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Bin Xi, Yu Xiao, Yuanxin Li, Zhixi Liang, Shao Yong Zheng, Zengping Chen, Yunliang Long
Summary: This communication presents a periodic mirror-reflected circular-polarized leaky wave antenna with dual-beam scanning in dual polarization types. The antenna unit cell employs two orthogonally separated oblique stubs to create circular polarization. A new method of adding a groove at the junction of stubs within the unit cell is introduced to improve the axial ratio and beam-scanning characteristics. To achieve dual-beam scanning in dual circular polarization, a metallic via is added at the end of the antenna for mirror reflection. The measured results show good agreement with the simulated ones, demonstrating the effectiveness of the proposed antenna design.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Nibash Kumar Sahu, Sanjeev Kumar Mishra
Summary: This letter presents a novel technique for achieving circular polarizations (CPs) at 2.45 GHz ISM and 3.5 GHz WiMAX bands using a polarization-converting metasurface (PCMS). By combining different modes and phase shifts, four distinct PCMSs are designed to generate left-hand CP, right-hand CP, or a combination of both in the desired frequency bands. One of the PCMS-based monopole antennas is fabricated and measured, demonstrating wide impedance bandwidth, high gain, high efficiency, and low specific absorption rate (SAR), making it suitable for off-body communication.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Tzyh-Ghuang Ma, Xuan-Feng Wu, Yun-Chieh Yeh, Huy Nam Chu
Summary: A new self-oscillating circularly polarized active integrated antenna (CPAIA) with boosted conversion efficiency is proposed in this letter. The proposed antenna achieves a conversion efficiency 40% better than the second best design in the literature by integrating a CP exciter with a pair of anti-symmetrically arranged parasitic radiators. The fabricated and tested CPAIA demonstrates good agreement between the simulated and measured results, validating the design concept and highlighting the advantages of the proposed design.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Wen-Hai Zhang, Quan Xue, Wanchen Yang, Wenquan Che, Shaowei Liao, Haidong Chen, Wenjie Feng, Kam-Weng Tam
Summary: A planar bidirectional circularly polarized antenna using orthogonal magnetic dipoles (OMDs) without an extra phase shift line is proposed. Experimental results show that the antenna has low design complexity and improved gains.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Lehu Wen, Steven Gao, Qi Luo, Wei Hu, Benito Sanz-Izquierdo, Xue-Xia Yang
Summary: In this paper, a wideband circularly polarized reflectarray antenna using rotational symmetrical crossed dipoles is proposed. Coupled crossed dipoles are investigated for the first time as the unit cell to achieve wideband reflection bandwidth in the antenna design. The CP reflection bandwidth is greatly improved and adjusted by controlling the coupling between the crossed dipoles, thanks to the excitation of two series resonances and two parallel resonances on the crossed dipoles. A collimated CP RA antenna with a circular aperture of 316 unit cells is designed based on this unit cell, and a wide CP bandwidth of 7.6-15.9 GHz is achieved with AR<3 dB.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Quan-Wei Lin, Shaker Alkaraki, Hang Wong, James R. Kelly
Summary: This article presents a novel CP antenna based on an anisotropic metamaterial that can convert linear polarization to circular polarization over a wideband of frequencies in the X-band. The antenna consists of a metamaterial-based polarizer mounted above the aperture of a rectangular waveguide, oriented at 45 degrees to the waveguide's E-plane. The polarizer is composed of multiple metamaterial layers and incorporates rectangular split ring resonators on both sides of a dielectric slab. Impedance matching layers are introduced to enhance the axial-ratio bandwidth.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Pan-Pan Zhang, Xi-Cheng Zhu, Yun Hu, Zhang-Cheng Hao, Guo-Qing Luo
Summary: This letter presents the design and implementation of a wideband circularly polarized folded reflectarray antenna (CPFRA) with a linearly polarized (LP) feed antenna. The CPFRA utilizes a polarization-sensitive frequency selective surface (FSS) and sequential rotation technique to achieve wideband operation and enhanced axial ratio (AR) bandwidth.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2022)
