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Matos, S. A., Costa, J. R., Lima, E. B., Naseri, P., Fernandes, C. A. & Fonseca, N. J. G. (2018). Wide-angle mechanical scanning Transmit-arrays for satellite Ka-band user terminals. In 2018 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting. Boston: IEEE.

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, IEEE, 2018

@inproceedings{matos2018_1734879601658,
	author = "Matos, S. A. and Costa, J. R. and Lima, E. B. and Naseri, P. and Fernandes, C. A. and Fonseca, N. J. G.",
	title = "Wide-angle mechanical scanning Transmit-arrays for satellite Ka-band user terminals",
	booktitle = "2018 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting",
	year = "2018",
	editor = "",
	volume = "",
	number = "",
	series = "",
	doi = "10.1109/apusncursinrsm.2018.8608580",
	publisher = "IEEE",
	address = "Boston",
	organization = ""
}

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. A.
AU  - Costa, J. R.
AU  - Lima, E. B.
AU  - Naseri, P.
AU  - Fernandes, C. A.
AU  - Fonseca, N. J. G.
PY  - 2018
DO  - 10.1109/apusncursinrsm.2018.8608580
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  -