期刊
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
卷 18, 期 8, 页码 1562-1566出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2019.2922695
关键词
Beam scanning; lens antenna; paraboloid phase distribution
资金
- National Natural Science Foundation of China [61601242]
- Open Research Program of the State Key Laboratory of Millimeter Waves, China [K201926]
- Postgraduate Research & Practice Innovation Program of Jiangsu Province
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 lambda(0) x 10.5 lambda(0) x 0.2 lambda(0) (lambda(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 degrees 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.
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