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Matos, S., Costa, J. R., E. B. Lima, Parinaz Naseri, C. A. Fernandes & Fonseca, N. J. G. (2018). Wide-angle mechanical scanning Transmit-arrays for satellite Ka-band user terminals. 2018 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting.
S. D. Matos et al., "Wide-angle mechanical scanning Transmit-arrays for satellite Ka-band user terminals", in 2018 IEEE Int. Symp. on Antennas and Propagation and USNC-URSI Radio Science Meeting, Boston, 2018
@misc{matos2018_1768957363126,
author = "Matos, S. and Costa, J. R. and E. B. Lima and Parinaz Naseri and C. A. Fernandes and Fonseca, N. J. G.",
title = "Wide-angle mechanical scanning Transmit-arrays for satellite Ka-band user terminals",
year = "2018",
howpublished = "Ambos (impresso e digital)"
}
TY - CPAPER TI - Wide-angle mechanical scanning Transmit-arrays for satellite Ka-band user terminals T2 - 2018 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting AU - Matos, S. AU - Costa, J. R. AU - E. B. Lima AU - Parinaz Naseri AU - C. A. Fernandes AU - Fonseca, N. J. G. PY - 2018 CY - Boston AB - The antenna design for broadband satellite communications is particularly challenging, new cost-effective solutions are still needed. An overview of recent contributions from the authors on planar transmit-arrays (TAs) for satellite Kaband user terminals is presented. We tackle several design problems: how to improve the scanning coverage using low cost mechanical beam steering, how to choose the type of unit cells that compose the TA, how to devise a single aperture with high gain that operates simultaneous at two widely separate frequency bands. Different prototypes are used to conduct these studies. All these TAs provide wide beam zenith scanning, [-50º,50º] with less that 3dB of scan loss, good circular polarization performance and low beam distortions. The prototypes have the same aperture size, 195 × 145 mm2, that provide gains up to 29 dBi for 30 GHz. ER -
English