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Quasi-Optical Excitation of a Circularly-Polarized Metasurface Antenna at K-band

Abstract : This paper presents a new concept of modulated metasurface (MTS) antenna for satellite communications. As opposed to using cylindrical surface waves (SW) to excite circular apertures, we employ a quasi-optical beamformer to launch a plane SW. This architecture enables an efficient illumination of rectangular apertures. In addition, the use of anisotropic MTS elements allows us to obtain circularly-polarized beams with excellent characteristics in terms of cross-polarization discrimination. We present the design process of a prototype at K-band and the obtained simulation results, which prove the suitability of this antenna for satellite data links. © 2020 EurAAP.
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Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Tuesday, December 1, 2020 - 10:50:31 AM
Last modification on : Friday, August 5, 2022 - 10:30:54 AM
Long-term archiving on: : Tuesday, March 2, 2021 - 6:43:31 PM


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Jorge Ruiz-Garcia, M. Faenzi, A. Mahmoud, Mauro Ettorre, Patrick Potier, et al.. Quasi-Optical Excitation of a Circularly-Polarized Metasurface Antenna at K-band. 14th European Conference on Antennas and Propagation, EuCAP 2020, Mar 2020, Copenhagen, Denmark. pp.9135303, ⟨10.23919/EuCAP48036.2020.9135303⟩. ⟨hal-02931846⟩



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