Roles of matching layers for a shaped beam lens horn antenna

Kezuka, Atsushi; Yamada, Yoshıhıde

doi:10.1109/aps.2004.1330484

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…These undesirable effects also affect the beam scanning performance of the lens antenna. Internal reflections can be reduced signi cantly by wave transformers [5] or corrugations fabricated on the lens surface [6].…”

Section: Introductionmentioning

confidence: 99%

Comparison of matching layers for extended hemispherical lenses in beam scanning applications

Kar

Sönmez

Mambet

et al. 2016

2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Elect

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This paper examines the beam scanning performance of the matching layers designed on millimeter wave integrated lens antennas with dense material. Millimeter wave extended hemispherical lens antenna made of alumina is coated with different types of solutions for antire ection layers. The lens is illuminated by an aperture coupled lens antenna designed to radiate into alumina at 77GHz. The role of matching layers is demonstrated. A frequency-dependence characterization of the beam pattern clearly showed the existence and impact of internal reflections on beam scanning performance.

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Section: Introductionmentioning

confidence: 99%

Comparison of matching layers for extended hemispherical lenses in beam scanning applications

Kar

Sönmez

Mambet

et al. 2016

2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Elect

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Very Broadband Extended Hemispherical Lenses: Role of Matching Layers for Bandwidth Enlargement

Nguyen

Sauleau

Perez

2009

IEEE Trans. Antennas Propagat.

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International audienceThe design and optimization of very broadband integrated lens antennas (ILAs) constitutes one of the future trends in lens antenna field. To this end we investigate numerically the radiation performance of millimeter wave ILAs coated with multiple anti reflection layers. We propose lens structures of moderate size (four wavelengths in diameter at the center frequency) and made from a dense dielectric material (ceramic). They are illuminated by two kinds of on-axis primary sources, namely a dielectric-loaded metallic waveguide and a patch antenna. This enables to assess the role of the lens illumination law on the performance of broadband ILAs. In particular, we demonstrate that ILAs coated with three stacked quarter wavelength matching layers exhibit a very broadband promising features. First their radiation characteristics remain very stable over a large frequency band: a 36% relative bandwidth is achieved using dielectric-loaded waveguide feeds. Secondly very high values of aperture efficiencies (beyond 91% over a 21% bandwidth) are obtained using printed feeds. The truncation effects of the ground plane and substrate of planar feeds upon the beam characteristics are also studied. We conclude that they must be taken into account at the very first stages of the design process of ILAs

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Compact High-Performance Lens Antenna Based on Impedance-Matching Gradient-Index Metamaterials

Jiang

Feng

et al. 2019

IEEE Trans. Antennas Propagat.

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Roles of matching layers for a shaped beam lens horn antenna

Cited by 4 publications

References 3 publications

Comparison of matching layers for extended hemispherical lenses in beam scanning applications

Comparison of matching layers for extended hemispherical lenses in beam scanning applications

Very Broadband Extended Hemispherical Lenses: Role of Matching Layers for Bandwidth Enlargement

Compact High-Performance Lens Antenna Based on Impedance-Matching Gradient-Index Metamaterials

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