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[Institution of Engineering and Technology 12th European Conference on Antennas and Propagation (EuCAP 2018) - London, UK (9-13 April 2018)] 12th European Conference on Antennas and Propagation (EuCAP 2018) - Ka-band Metasurface Antenna for Data Downlink from LEO Satellites
摘要： This paper presents design, realization and measurements of a prototype of metasurface antenna radiating a sectoral beam with isoflux envelope. The prototype, developed for data-downlink applications from LEO satellites, is fed by a circular waveguide and can be associated to a turn table mechanism to provide the same Earth coverage as a conical isoflux beam, with the benefit of a higher gain.
关键词： metasurface antenna,antenna design,leaky wave antennas
更新于2025-09-23 15:23:52
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[IEEE 2019 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) - Taipei, Taiwan (2019.12.3-2019.12.6)] 2019 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) - Preliminary Design of a Waveguide-Fed Milimeter Wave Metasurface Antenna with LCD Controlled Array Factor for 5G User Equipment
摘要： The millimeter wave 5G communication promises wide bandwidth for high data rate throughput, however the available area on cellular user equipment (UE) is quite limited, and 2 dimensional phased array occupies a large area and is fairly complicated. In this article we explore the possibility a waveguide-fed millimeter wave metasurface antenna for 28 GHz band. The element is a generic T-metasurface, and LCD control of array factor is suggested with a glass lens to focus the beam. A fan shape beam is generated from this antenna with maximum gain around 16.7 dB. This design may serve the 5G mmW communication with simpler structure to nearby small cell station.
关键词： 5G,metasurface antenna,waveguide-fed,LCD control,millimeter wave
更新于2025-09-23 15:21:01
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Low-profile wideband circularly polarised single-layer metasurface antenna
摘要： A novel low-pro?le single-fed circularly polarised single-layer metasurface antenna for wideband operation is proposed in this Letter. The metasurface antenna consists of nine unit cells arranged in a 3 × 3 layout. Four slits are incorporated into four of them, respectively, to form two orthogonal currents with 90° phase difference; hence, circularly polarised ?elds are excited. Moreover, a modi?ed L-type slot is etched on the middle lattice to improve impedance bandwidth and axial ratio performance. The proposed dielectric-?lled (?r = 3.5, tan δ = 0.001) antenna with a low pro?le of 0.038λ0 (λ0 is the working wavelength at 5.7 GHz in free space) achieves about 18.0% measured ?10 dB impedance bandwidth. The measured 3-dB axial ratio bandwidth of the proposed antenna is about 12.8% (5.35–6.08 GHz) with a broadside gain of more than 6.9 dBi.
关键词： low-profile,metasurface antenna,wideband,circularly polarised,single-layer
更新于2025-09-23 15:21:01
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[IEEE 2019 TEQIP III Sponsored International Conference on Microwave Integrated Circuits, Photonics and Wireless Networks (IMICPW) - Tiruchirappalli, India (2019.5.22-2019.5.24)] 2019 TEQIP III Sponsored International Conference on Microwave Integrated Circuits, Photonics and Wireless Networks (IMICPW) - Metasurface Loaded Patch Antenna For Wi-Fi Applications
摘要： Design of rectangular patch antenna with hexagonal shaped metasurfaces for Wi-Fi applications. In this paper, the corners of the rectangular patch are replaced by means of circular structures. This will remove the sharp transition and the desired frequency is achieved with smaller dimension in comparison with normal rectangular patch. A layer of metasurface elements is added with the antenna to improve the return loss. The proposed antenna is radiating at resonant frequency of 2.4 GHz with the gain value of 6.8 dB. The bandwidth is achieved from 2.37 GHz to 2.43 GHz around the resonant frequency of 2.4 GHz.
关键词： metasurface,antenna gain,radiation pattern,Wi-Fi
更新于2025-09-16 10:30:52
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[IEEE 2018 IEEE International Conference on Computational Electromagnetics (ICCEM) - Chengdu (2018.3.26-2018.3.28)] 2018 IEEE International Conference on Computational Electromagnetics (ICCEM) - A Dual-Steerable-Beam Multi-Slot Coupled Metasurface Antenna
摘要： This manuscript proposes a dual-steerable-beam multi-slot coupled metasurface antenna for a potential candidate of the indoor base station application. It consists of 7×10 metasurface cells coupled by 4 unequal-spacing slots with a two-port microstrip feeding line. The steerable beams are readily obtained by applying some phase differences between adjacent coupling slots. As a result, the operating band of the proposed antenna ranges from 5.15 GHz to 5.35 GHz for applications of LTE-U band in China. The 10-dB beamwidth of the two beams is around 120° in YOZ plane and the cross level at the junction of the two beams is around -10 dB. Compared with conventional multi-beam antenna arrays, the proposed antenna implements two steerable beams without complex beam-forming network or phase shifters, which can be easily extended to multi-beam indoor base station array design.
关键词： indoor base station application,LTE-U band,metasurface antenna,dual-steerable-beam
更新于2025-09-11 14:15:04