Analog Beamforming Using Time-Modulated Arrays With Digitally Preprocessed Rectangular Sequences
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Analog Beamforming Using Time-Modulated Arrays With Digitally Preprocessed Rectangular SequencesDate
2018-03Citation
R. Maneiro-Catoira, J. Bregains, J. A. Garcia-Naya, and L. Castedo, “Analog beamforming using time-modulated arrays with digitally preprocessed rectangular sequences,” IEEE Antennas Wirel. Propag. Lett., vol. 17, no. 3, pp. 497–500, 2018.
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https://doi.org/10.1109/LAWP.2018.2797971
Abstract
[Abstract]: Conventional time-modulated arrays are based on the application of variable-width periodical rectangular pulses (easily implemented with radio frequency switches) to the individual antenna excitations. However, a serious bottleneck arises when the number of exploited harmonic beams increases. In this context, the modest windowing features of the rectangular pulses produce an inflexible and ineffective harmonic beamforming. The use of other pulses, such as sum of weighted cosines, partially solves these issues at the expense of introducing additional non-timing variables. We propose the discrete-time preprocessing of rectangular pulses before being applied to the antenna to accomplish an agile, efficient, and accurate harmonic beamforming, while keeping the simplicity of the hardware structure.
Keywords
Beamforming (BF)
Time-modulated arrays (TMAs)
Time-modulated arrays (TMAs)
Description
© 2018 IEEE. This version of the article has been accepted for publication, after peer review. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The Version of Record is available online at: https://doi.org/10.1109/LAWP.2018.2797971.
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© 2018 IEEE. Todos os dereitos reservados. All rights reserved.
ISSN
1536-1225