Beam-Scanning Lens Antenna Based on Elliptical Paraboloid Phase Distribution Metasurfaces

A two-dimensional (2-D) beam-scanning lens antenna is proposed for Ka-band satellite applications, which is composed of a feed horn that can move in plane and a metasurface lens with elliptical paraboloid phase distribution. Due to the paraboloid phase compensation, the lens antenna possesses wide s...

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Bibliographic Details
Published inIEEE antennas and wireless propagation letters Vol. 18; no. 8; pp. 1562 - 1566
Main Authors Wang, Hao-Fang, Wang, Zheng-Bin, Wu, Zhi-Hang, Zhang, Ye-Rong
Format Journal Article
LanguageEnglish
Published New York IEEE 01.08.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antenna arrays
Antenna feeds
Antenna measurements
Antennas
Beam scanning
Extremely high frequencies
Horn antennas
lens antenna
Lens antennas
Lenses
Metasurfaces
Parabolic bodies
paraboloid phase distribution
Phase distribution
Satellite communications
Scanning
Weight reduction
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Summary:A two-dimensional (2-D) beam-scanning lens antenna is proposed for Ka-band satellite applications, which is composed of a feed horn that can move in plane and a metasurface lens with elliptical paraboloid phase distribution. Due to the paraboloid phase compensation, the lens antenna possesses wide scanning angles in the azimuth and elevation. The fabricated lens has a size of 10.5 λ 0 × 10.5 λ 0 × 0.2 λ 0 ( λ 0 is wavelength at the center frequency of 30 GHz) and the focal-to-diameter ratio of 0.2. The total system can realize the boresight gain of 18.5 dB, and the scanning coverage of ±60° with a gain tolerance of 3.7 dB. The design methodology features the advantages of low cost, compact size, and light weight. It can find potential applications in multibeam or beam-scanning antenna systems that are comparable with array antennas.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2019.2922695