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Design and qualification of Ku-band-radiating chains for receive active array antennas of flexible telecommunication satellites

Published online by Cambridge University Press:  05 May 2020

Vincenzo Pascale*
Affiliation:
AIRBUS Italia S.p.A., Via dei Luxardo 22-24, Rome 00156, Italy
Davide Maiarelli
Affiliation:
AIRBUS Italia S.p.A., Via dei Luxardo 22-24, Rome 00156, Italy
Luciano D'Agristina
Affiliation:
AIRBUS Italia S.p.A., Via dei Luxardo 22-24, Rome 00156, Italy
Nicola Gatti
Affiliation:
AIRBUS Italia S.p.A., Via dei Luxardo 22-24, Rome 00156, Italy
*
Author for correspondence: Vincenzo Pascale, E-mail: vincenzo.pascale@airbus.com

Abstract

Airbus Italia recently developed enhanced passive components as key elements for its telecommunication Ku-band antenna product lines, tailored to reconfigurable payloads. This paper describes the design and qualification of a dual linear polarization Ku-band-radiating chain, developed for the DRA receive (Rx) active antennas embarked on the Eutelsat Quantum satellite. The feed chain covers the entire Ku-band frequency range allocated for fixed satellite services providing receive functionality and embedding sharp rejection features over the adjacent transmit band. The proposed design provides high radiation efficiency (>90%) and polarization purity (XPD > 33 dB), together with low RF losses and flat group-delay variation over a 13% fractional bandwidth, keeping a compact size and reduced axial length. The unit has been optimized for high reproducibility in high volume productions, typical of large DRA applications, for which stringent mass and dimensional constraints, as well as excellent amplitude and phase tracking among similar units, are key features. Details of the feed chain design and an overview of RF and environmental qualification test results are presented.

Type
Industrial and Engineering Paper
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2020

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Design and qualification of Ku-band-radiating chains for receive active array antennas of flexible telecommunication satellites
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