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A Telemetry, Tracking, and Command Antennas System for Small-Satellite Applications

1
Antennas, Propagation and Millimeter-Wave Systems section at the Department of Electronic Systems, Aalborg University, 9220 Aalborg, Denmark
2
Department of Engineering, University of Palermo, Viale delle Scienze Ed.9, 90128 Palermo, Italy
3
Department of Electrical, Electronics and Computer Engineering, University of Catania, viale A. Doria 6, 95126 Catania, Italy and and Consorzio Nazionale Interuniversitario per le Telecomunicazioni (CNIT), Viale G.P. Usberti, I-43124 Parma, Italy
4
Sicilsat Communications s.r.l, Via della Resistenza 44, 95030 Pedara, Italy
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(6), 689; https://doi.org/10.3390/electronics8060689
Received: 15 May 2019 / Revised: 1 June 2019 / Accepted: 14 June 2019 / Published: 18 June 2019
(This article belongs to the Section Microwave and Wireless Communications)
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PDF [1292 KB, uploaded 18 June 2019]
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Abstract

Circularly polarized (CP) antennas are used in space applications for telemetry tracking and command (TT&C). In this paper, we present an antenna for a TT&C system that can employ only four antennas to achieve a wide quasi-isotropic coverage. The proposed single-feed circular polarized annular patch antenna is low profile and compact. It exhibits a wide impedance bandwidth of 19.7%, wide-angle circular polarization with an on-axis maximum gain higher than 6 dBi and an axial ratio below 4 dB in the frequency band 2.0–2.3 GHz. The developed low-cost antenna can be used for small-satellite data downlink where only two right hand circular polarized (RHCP) antennas and two left hand circular polarized (LHCP) antennas would be required since each antenna has an adequate CP gain on a wide angle. A prototype antenna has been fabricated and measured. The experimental validation shows a good agreement of the measured impedance bandwidth, axial ratio, and far-field pattern with the ones predicted by numerical full-wave study. View Full-Text
Keywords: circular patch; circular polarization; TT&C; small satellites circular patch; circular polarization; TT&C; small satellites
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Squadrito, P.; Livreri, P.; Di Donato, L.; Squadrito, C.; Sorbello, G. A Telemetry, Tracking, and Command Antennas System for Small-Satellite Applications. Electronics 2019, 8, 689.

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