Artificial dielectric lens antennas: Assessment of their potential for space applications

Abella, C.; Marín, Manuel A. Fernández-Villacañas; Vazquez, Jaime Maria Coello De Portugal Martinez; Peces, J.; Romera, J. A.; Graham, R.; Crone, G.; Garcia, R.

doi:10.1109/euma.1993.336742

Cited by 9 publications

(2 citation statements)

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“…In [15], variablesize metallic implants throughout the aperture of the lens were used. Since a single layer was not enough to achieve suffi cient phase correction, many parallel layers were inserted in cascade, spaced by thick layers of low-dielectric-constant material.…”

Section: S To 2000s: Artifi Cial Dielectric Lenses Made Of Variabmentioning

confidence: 99%

Research and Development on Phase-Shifting Surfaces (PSSs)

Gagnon

Petosa

McNamara

2013

IEEE Antennas Propag. Mag.

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29the Communication Research Centre Canada, in close collaboration with the University of Ottawa. Since then, the concept has been applied to the design of ultra-thin lenses having comparable effi ciency to a shaped dielectric lens, the leading conventional technology. In this paper, we fi rst provide a brief historical review of lenses and related technologies, from soon after World War II to the present. We then present the phaseshifting surface concept and its implementation, followed by a selection of prototypes that we have developed to demonstrate phase-shifting surface performance and capabilities. The paper ends with a general discussion presenting the current and future challenges of phase-shifting surface development, fol lowed by a conclusion. Historical ReviewMicrowave collimating lenses fi rst used as antenna elements were made from homogeneous dielectric material, and were based on the transposition of optical lenses in the microwave frequency range [3]. Despite providing a high aperture effi ciency, they suffered from major physical drawbacks: they were thick, heavy, bulky, and expensive to fabricate. AbstractPhase-shifting surfaces (PSSs) developed in recent years are reported. Research and development on these phaseshifting surfaces are set in the historical context of prior-art free-standing lensing devices, as well as in the context of recent studies performed by other research groups. In addition, initial work on a phase-and amplitude-shifting surface (PASS), an extension of the phase-shifting surface, is demonstrated in a beam-shaping application.

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Section: S To 2000s: Artifi Cial Dielectric Lenses Made Of Variabmentioning

confidence: 99%

Research and Development on Phase-Shifting Surfaces (PSSs)

Gagnon

Petosa

McNamara

2013

IEEE Antennas Propag. Mag.

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“…Virtually all of these lens designs delicately rely on non-planar structures, which are difficult to fabricate especially because of the required machining accuracy. Planar antenna lenses such as artificial dielectric lenses [7] and dipole array lenses [8] may solve the problem to some extent. However, the underlying multilayer structures of artificial dielectric lenses tend to increase the transmission losses, whereas the area of the dipole array lenses is usually much larger than the aperture of the feeding horn antenna.…”

Section: Introductionmentioning

confidence: 99%

Automatic Design of Broadband Gradient Index Metamaterial Lens for Gain Enhancement of Circularly Polarized Antennas

Meng¹,

Zhang²,

Erni³

et al. 2013

PIER

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Abstract-A broadband gradient index (GRIN) metamaterial lens for gain enhancement of circularly polarized antennas has been automatically designed, fabricated and investigated. The GRIN metamaterial lens consists of an isotropic dielectric plate with a corresponding distribution of deep-subwavelength drill holes each with the same diameter. Such drill holes have a negligible influence on both the polarization state and the spectral response of the electromagnetic wave transmitting through the resulting GRIN metamaterial lens. Therefore, the GRIN metamaterial lens is polarization-insensitive and can efficiently transform spherical waves into planar waves over a very broad frequency range keeping the initial polarization states (e.g., linear or circular) scarcely changed. In the following we have derived analytical formulas that enable the setup of distribution rules

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