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Antenna pattern evaluation formed by reconfigurable antennas with the configuration of an array-fed reflector

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Advances in Communications Satellite Systems: Proceedings of the 37th International Communications Satellite Systems Conference (ICSSC-2019) — Recommend this title to your library

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The R&D project aimed to realize the beamforming flexibility for Ka-band high throughput satellite is now in progress. The important technological challenge is to establish the wideband digital beamforming (DBF) technology. The developed technology is planned to be tested in orbit by the engineering test satellite-9. In this chapter, the beamforming capability of DBF with the configuration of an array-fed reflector is investigated. Antenna patterns are evaluated by considering the different restrictions on excitation coefficients between DBF and a conventional active phased array antenna (APAA). The excitation phase and amplitude of APAA is constrained to the assumed discretized values. The sidelobe levels formed by DBF achieve an excellent performance of more than 5 dB compared to APAA. We confirmed the more flexible beamforming capability of DBF.

Chapter Contents:

• 26.1 Introduction
• 26.2 Antenna pattern evaluation
• 26.3 Conclusion
• Acknowledgments
• References

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