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ThinkMind // SPACOMM 2015, The Seventh International Conference on Advances in Satellite and Space Communications // View article spacomm_2015_1_20_20009


Application of Knife-Edge Diffraction Theory to Optimize Radio Frequency Compatibility On-board a Satellite

Authors:
Jens Timmermann
Christian Imhof
Dieter Lebherz
Jörg Lange

Keywords: Radio Frequency Compatibility; knife-edge diffraction; baffle attenuation; satellite performance

Abstract:
Modern Earth observation satellites accommodate manifold combinations of Radio Frequency (RF) transmitters and receivers located at various positions on-board the satellite. To minimize the field strength generated by the Tx at the Rx position, one method is to shade the line of sight path by a metallic baffle leading to signal attenuation. This contribution shows the achievable attenuation in practical satellite design and compares the results obtained by field simulations to those obtained by a simplified model (knife-edge diffraction theory). Hereby, knife-edge theory has been expanded by inclusion of angle-dependent antenna gain. Due to the good agreement of the results, knife-edge theory can be used for first-order assessments and parameter studies. This approach minimizes the overall computation time and is currently used to optimize Radio Frequency Compatibility (RFC) on-board the future MetOp Second Generation (MetOp-SG) satellites.

Pages: 7 to 12

Copyright: Copyright (c) IARIA, 2015

Publication date: April 19, 2015

Published in: conference

ISSN: 2308-4480

ISBN: 978-1-61208-397-1

Location: Barcelona, Spain

Dates: from April 19, 2015 to April 24, 2015

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