Combining Switched TMAs and FDAs to Synthesize Dot-Shaped Beampatterns
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Combining Switched TMAs and FDAs to Synthesize Dot-Shaped BeampatternsDate
2021Citation
R. Maneiro-Catoira, J. Brégains, J. A. García-Naya and L. Castedo, "Combining Switched TMAs and FDAs to Synthesize Dot-Shaped Beampatterns," in IEEE Antennas and Wireless Propagation Letters, vol. 20, no. 9, pp. 1716-1720, Sept. 2021, doi: 10.1109/LAWP.2021.3094936
Abstract
[Abstract]: The application of frequency offsets to the elements of a conventional phased array with variable phase shifters (VPSs) leads to frequency diverse arrays (FDAs) with the ability to provide range-angle spatial focusing. In this letter, we propose an innovative approach to FDA using switched time-modulated arrays (TMAs) instead of VPSs. The time modulation efficiency of the combined FDA-TMA approach is over 94% when using Kaiser windows to determine the frequency offsets. Such windows have the advantage of flexibly handling the tradeoff between the beam collection efficiency and the half power beamwidth without the need of difficult optimizations.
Keywords
Frequency diverse arrays (FDAs)
Time-modulated arrays (TMAs)
Time-modulated arrays (TMAs)
Description
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.2021.3094936.
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ISSN
1536-1225
1548-5757
1548-5757