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Journal Articles Journal of Lightwave Technology Year : 2022

Photonic-Enabled Beam Switching Mm-Wave Antenna Array

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We present a photonically-excited antenna array at E-band for scanning by beam switching in wireless links. First, we discuss the proposed technique applied to photonic-enabled (sub)millimeter-wave transmitters. Next, we present the proposed solution; it consists of two sub-arrays of stacked patches as primary feeds of a Polytetrafluoroethylene (PTFE) lens, with one photodiode feeding each sub-array. To validate the assembly, the return loss and radiation patterns have been measured for one of the sub-arrays excited with a coplanar probe. In turn, the lens illuminated by one of the sub-arrays yields a directivity of 27 dBi. The radiation patterns measured for the transmitter module (including the lens) are in very good agreement with full-wave simulations, and they show that excitation of one of either sub-arrays allows beam switching between 2.7 with a beam crossover at 3 dB. Finally, we have tested the transmitter in a 0.6 m wireless link. Depending on the position of the detector and on which subarray is excited, we have accomplished 5 Gbps transmission for on-off-keying modulation and direct detection (BER = 1E11). The system constitutes an initial proof of photonic-assisted beam switching for mm-wave transmitters enabling broadband operation with a directive and switchable beam. IEEE
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hal-03480488 , version 1 (15-12-2021)


Attribution - NonCommercial - CC BY 4.0



Alvaro José Pascual-Gracia, Muhsin Ali, Thomas Batte, Fabien Ferrero, Laurent Brochier, et al.. Photonic-Enabled Beam Switching Mm-Wave Antenna Array. Journal of Lightwave Technology, 2022, 40 (3), pp.632-639. ⟨10.1109/JLT.2021.3124092⟩. ⟨hal-03480488⟩
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