Effect of Faceting On Medium Gain Homogeneous Spherical Lens

Gray, D. and Le Kernec, J. (2023) Effect of Faceting On Medium Gain Homogeneous Spherical Lens. In: IEICE Technical Committee on Antennas and Propagation (AP), Tokyo, Japan, 31 Aug - 01 Sep 2023, pp. 61-66.

Abstract

The aperture efficiency of 28dBi-class single plastic spherical lenses fed by a scalar feed is limited to 75%. This results from the peculiar aperture distribution created by the lens-feed system. For switched beam applications a flat facet face can be cut facing the immobile feed. The facet size was investigated for common plastic relative permittivities 2.1 to 2.7 for a fixed sphere radius of 5 wavelengths illuminated by a 10dBi scalar feed across 24% bandwidth in a commercially available simulator. Peak aperture efficiencies above 90% were achieved without increasing the Gain ripple across the band.

• Item Type: Conference Proceedings
• Keywords: lens antenna, Q-band antenna, non terrestrial network.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Gray, Dr Derek and Le Kernec, Dr Julien
• Authors: Gray, D., and Le Kernec, J.
• College/School: College of Science and Engineering > School of Engineering; College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity
• ISSN: 2432-6380
• Copyright Holders: Copyright © 2023 by IEICE
• First Published: First published in IEICE Technical Report 123(173):61-66
• Publisher Policy: Reproduced in accordance with the publisher copyright policy

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