Time-modulated array beamforming with periodic stair-step pulses
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Time-modulated array beamforming with periodic stair-step pulsesData
2020-01Cita bibliográfica
Maneiro-Catoira, R., Brégains, J., García-Naya, J. A., & Castedo, L. (2020). Time-modulated array beamforming with periodic stair-step pulses. Signal Processing, 166(107247), 107247. https://doi.org/10.1016/j.sigpro.2019.107247
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https://doi.org/10.1016/j.sigpro.2019.107247
Resumo
[Abstract]: Time-modulated arrays (TMAs) are able to improve the side-lobe level of the radiation pattern at the fundamental mode but cannot steer the beam at such a mode towards a given direction. Beam-steering is possible in a TMA, but only at the harmonic patterns and at the expense of a severe TMA efficiency reduction. In this work we propose a TMA approach that simultaneously performs both features over the same beam by using two sets of switches: (1) single-pole four-throw switches to generate periodic stair-step pulses suitable for efficiently synthesizing a uniform steerable beam over the first positive harmonic, and (2) single-pole single-throw switches to reconfigure the side-lobe level of the previous beam. Performance, small size, cost-effectiveness, and performance invariability with the carrier frequency are features that make this TMA approach a competitive solution for analog beamforming. Accordingly, the structure is an attractive proposal for the design of multibeam transceivers.
Palabras chave
Antenna arrays
Time-modulated arrays
Antenna efficiency
Beam steering
Time-modulated arrays
Antenna efficiency
Beam steering
Descrición
© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/. This version of the article: Maneiro-Catoira, R., Brégains, J., García-Naya, J. A., & Castedo, L. (2020). “Time-modulated array beamforming with periodic stair-step pulses”, has been accepted for publication in Signal Processing, 166(107247). The Version of Record is available online at https://doi.org/10.1016/j.sigpro.2019.107247.
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Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC-BY-NC-ND 4.0)
ISSN
0165-1684