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Circularly polarized global navigation satellite systems metasurface antennas in sub-wavelength metallic cavities

Published online by Cambridge University Press:  04 July 2023

Laura García-Gámez ,
Loïc Bernard Open the ORCID record for Loïc Bernard [Opens in a new window] ,
Ronan Sauleau ,
Sylvain Collardey ,
Kouroch Mahdjoubi ,
Philippe Pouliguen  and
Patrick Potier
Laura García-Gámez
Affiliation:
ISL, French-German Research Institute of St Louis, Saint-Louis, France CNRS, IETR (Institut d’Électronique et des Technologies du numéRique)—UMR 6164, Univ Rennes, Rennes, France
Loïc Bernard*
Affiliation:
ISL, French-German Research Institute of St Louis, Saint-Louis, France CNRS, IETR (Institut d’Électronique et des Technologies du numéRique)—UMR 6164, Univ Rennes, Rennes, France
Ronan Sauleau
Affiliation:
CNRS, IETR (Institut d’Électronique et des Technologies du numéRique)—UMR 6164, Univ Rennes, Rennes, France
Sylvain Collardey
Affiliation:
CNRS, IETR (Institut d’Électronique et des Technologies du numéRique)—UMR 6164, Univ Rennes, Rennes, France
Kouroch Mahdjoubi
Affiliation:
CNRS, IETR (Institut d’Électronique et des Technologies du numéRique)—UMR 6164, Univ Rennes, Rennes, France
Philippe Pouliguen
Affiliation:
DGA, Direction Générale de l’Armement, Maîtrise de l'Information, Bruz, France
Patrick Potier
Affiliation:
DGA, Direction Générale de l’Armement, Maîtrise de l'Information, Bruz, France
*
Corresponding author: Loic Bernard; Email: loic.bernard@isl.eu
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Abstract

Two metasurface-inspired antennas embedded in a metallic cavity are introduced here. They are expected to be integrated on fast moving platforms enduring harsh accelerations and shocks. The metasurface allows enlarging the antenna bandwidth that is intrinsically reduced for small antennas embedded in sub-wavelength metallic cavities. The first one is only 60 × 60 × 20 mm3 (0.23λ1 × 0.23λ1 × 0.08λ1 at the frequency of 1164 MHz) and presents a dual-band behavior, covering both the lower and upper global navigation satellite systems (GNSS) bands (all GNSS bands are covered). It is fed by four probes and a dedicated circuit, ensuring the phase quadrature between adjacent feeds to achieve circular polarization over these two bands. For the second proposed antenna, circular polarization is achieved using two feed points connected to the radiating aperture of size 50 × 50 × 20 mm3 (0.26λ0 × 0.26λ0 × 0.10λ0 at the frequency of 1559 MHz). It covers the E1, L1, B1, and G1 GNSS bands. The numerical results are successfully validated by measurements.

Keywords

cavitycircular polarizationGNSSmetasurfacemultiband
Type
EuCAP 2022 Special Issue
Information
International Journal of Microwave and Wireless Technologies , Volume 15 , Special Issue 8: EuCAP 2022 Special Issue , October 2023 , pp. 1273 - 1282
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Copyright
© Institut franco-allemand de recherches, Université de Rennes - IETR, DGA/AID, and DGA / MI, 2023. Published by Cambridge University Press in association with the European Microwave Association

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