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Multifrequency Radiator With Spatial Diversity Based on Metasurfaces

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4 Author(s)
Liberal, I. ; Dept. of Electr. & Electron. Eng., Public Univ. of Navarra, Pamplona, Spain ; Ederra, I. ; Teniente, J. ; Gonzalo, R.

A low-profile multifrequency antenna that radiates at a different half-space at each of its frequency bands has been designed, numerically evaluated, fabricated, and tested. The antenna consists of a U-slot dipole placed between two metasurfaces composed of grids of cut and continuous wires. The fabricated prototype radiates toward the upper half-space at the low-frequency band with 6.1 dBi gain (10 dB of front-to-back radiation ratio) and toward the lower half-space at the high-frequency band, with two peaks of 7.6 and 6.8 dBi gain (with 12.6 and 23.8 dB front-to-back radiation ratio, respectively). The antenna remains planar with a thickness of 0.15 at 9.3 GHz.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )