Circularly-polarized discrete lens antennas in the 60-GHz band

Creators: Kaouach, Hamza; Dussopt, Laurent; Lanteri, Jérôme; Koleck, Thierry; Sauleau, Ronan

Others:: Institut d'Électronique et des Technologies du numéRique (IETR) ; Université de Nantes (UN)-Université de Rennes 1 (UR1) ; Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes) ; Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS); Laboratoire d'Electronique, Antennes et Télécommunications (LEAT) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS); Centre National d'Études Spatiales [Toulouse] (CNES)

Description

This paper presents the design and demonstration of circularly-polarized transmit-arrays operating in the 60-GHz band. These arrays have a fairly simple structure with three metal layers and are fabricated with a standard printed-circuit board technology. The simulation method is based on an electromagnetic model of the focal source and the unit-cells, associated to an analytical modeling of the full structure. The experimental results in V-band are in very good agreement with the simulations and demonstrate very satisfactory characteristics. Power efficiencies up to 60% are reached with a -1 dB gain-bandwidth up to 7%, and low cross-polarization level.

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Circularly-polarized discrete lens antennas in the 60-GHz band

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