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Journal Articles Progress In Electromagnetics Research Letters Year : 2014

Foam Based Luneburg Lens Antenna at 60 GHz

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Abstract

An innovative technological process is investigated to easily manufacture inhomogeneous Luneburg lenses. A unique foam material is drilled and pressed to achieve the different dielectric constant needed to follow the index law inside the lens. The performance of such 60 GHz antenna is described and the antenna prototype is measured in terms of gain and radiation patterns. The results show a good efficiency (60% with a directivity of 18-19dBi) and demonstrate the feasibility of this kind of Luneburg lens, through the use of a simple technological process. The lens with a diameter of 56mm and a thickness of 3mm operates in the 57-66 GHz bandwidth. The magnitude of S11 parameter is under -10dB in the whole bandwidth and an half-power beamwidth of 5° and 50° in H-plane and E-plane respectively is reached.
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Dates and versions

hal-00953283 , version 1 (28-02-2014)

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Jonathan Bor, Olivier Lafond, Hervé Merlet, Philippe Le Bars, Mohamed Himdi. Foam Based Luneburg Lens Antenna at 60 GHz. Progress In Electromagnetics Research Letters, 2014, 44, pp.1-7. ⟨10.2528/PIERL13092405⟩. ⟨hal-00953283⟩
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