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Circularly-Polarized Discrete Lens Antennas in the 60-GHz Band

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Author(s): L. Dussopt | H. Kaouach | J. Lanteri | R. Sauleau

Journal: Radioengineering
ISSN 1210-2512

Volume: 20;
Issue: 4;
Start page: 733;
Date: 2011;
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Keywords: Discrete lens | transmit-array | unit-cell | millimeter-wave antennas | 60 GHz band

ABSTRACT
This paper presents the design and demonstration of two circularly-polarized transmit-arrays operating in the 60-GHz band and generating a broadside beam and a 30°-tilted beam respectively. These arrays have a fairly simple structure with only three metal layers and are fabricated with a standard printed-circuit board technology. The simulated results show the performances of the unit-cells as well as the whole arrays, and detail their power budget. The experimental results in V-band are in very good agreement with the simulations and demonstrate very satisfactory characteristics. Power efficiencies up to 53.7% are reached with a 1-dB gain-bandwidth up to 9.1%, and low cross-polarization level.
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