期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 67, 期 6, 页码 4269-4274出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2019.2905989
关键词
Antenna array; gain enhancement; periodic metamaterials; radar cross section (RCS) reduction
资金
- National Key Research and Development Program of China [2017YFB0202500]
- National Natural Science Foundation of China [61601023, U1730102]
A low-profile metasurface (MS) with low scattering performance for both the x- and y-polarizations is designed based on far-field cancellation. Different from a conventional MS with a low radar cross section that uses chessboard structures, this design makes use of a 1-D MS. Without requiring periodicity in two dimensions, the proposed MS can thus be integrated more flexibly in many applications. Based on the proposed MS, a patch antenna array is proposed. Full-wave simulations and measurements show that, by incorporating the proposed MS, the scattering of the antenna array can be reduced by more than 5 dB over the antenna operating frequency band from 10.7 to 12 GHz (11.45%) under normal incidence. Furthermore, when the array radiates, parasitic radiation can be excited from the slots of the MS, which enhances the boresight gain of the array.
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