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Optically-Controlled Unit-Cell for Transmitarrays at X-band

Abstract : An optically-controlled unit-cell with 1-bit phase quantization is proposed at X-band for integration in transmitarrays. It consists of two U-slot and O-slot patch antennas connected by a metallized via. Their transmission phase is controlled by illuminating at 1.55μm two Germanium semiconductors located on the top of the O-slot. A prototype has been manufactured and characterized experimentally in a waveguide simulator. The unit-cell insertion loss is measured to be 4 dB at the center frequency. A 180°±10° phase difference between both phase states in the 8.7-10.5 GHz band and a 3-dB fractional transmission bandwidth of 5.1% are achieved. © 2019 European Microwave Association (EuMA).
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-02442760
Contributor : Laurent Jonchère <>
Submitted on : Thursday, January 16, 2020 - 4:49:33 PM
Last modification on : Monday, October 5, 2020 - 9:50:29 AM

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Romain Cané, Ronan Sauleau, Mehdi Alouini. Optically-Controlled Unit-Cell for Transmitarrays at X-band. 49th European Microwave Conference (EuMC 2019), Oct 2019, Paris, France. pp.714-717, ⟨10.23919/EuMC.2019.8910955⟩. ⟨hal-02442760⟩

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