Qualification of Ripple in Medium Gain Horns

Gray, D. and Le Kernec, J. (2023) Qualification of Ripple in Medium Gain Horns. In: IEICE Technical Committee on Antennas and Propagation (AP), Hokkaido, Japan, 12-14 Jul 2023, pp. 145-150.

Abstract

A conventional rectangular mouth 25dBi pyramidal horn and an equivalent circular mouth spline horn were fully qualified by simulation in commercially available software across 54% relative bandwidth for sensing application in and around the ESA vacuum chamber at the University of Glasgow. Both antenna types showed small-scale 0.2dB ripple in directivity, 3dB beamwidth and first sidelobe level caused by internal standing waves. This represents about 0.5% of the power passing through the antennas. Performance differences from feeding by either conventional rectangular waveguide proportions of 2:1 or 2:0.88 were investigated, as was the behaviour dependence of the waveguide to spline horn junction.

• Item Type: Conference Proceedings
• Keywords: horn antenna, directivity ripple.
• 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(103):145-150
• Publisher Policy: Reproduced in accordance with the publisher copyright policy

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