Journal
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Volume 65, Issue 7, Pages 3374-3383Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2017.2700874
Keywords
Coding metasurface; Fabry-Perot (F-P) antenna; high gain; low scattering; partially reflecting surface (PRS)
Funding
- National Natural Science Foundation of China [61571117, 61501117, 61631007]
- National Instrumentation Program [2013YQ200647]
- 111 Project [111-2-05]
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We present a novel method to design a conventional Fabry-Perot (F-P) antenna but with low scattering. Combining a coding metasurface and an F-P antenna together could effectively reduce the scattering and keep high gain simultaneously. The coding element consists of two layers of square metallic patches printed on both sides of a dielectric substrate. The bottom metallic patch helps form a partially reflecting surface (PRS) for the F-P antenna, while the upper metallic patch is utilized to construct the coding metasurface with an optimized coding sequence, aiming to reduce the scattering of the F-P antenna by redirecting electromagnetic energies in all directions. Based on the specially designed coding metasurface, a good scattering reduction without degrading the radiation performance of the F-P antenna is achieved. Both simulated and experimental results demonstrate the excellent performance of the proposed antenna, with a peak measured gain of 19.8 dBi and a significant scattering reduction in the frequency range of 8-12 GHz.
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