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http://hdl.handle.net/2183/35769 A TMA-FDA Approach for Two-Beam Steering
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R. Maneiro-Catoira, J. Brégains, J. A. García-Naya and L. Castedo, "A TMA-FDA Approach for Two-Beam Steering," in IEEE Antennas and Wireless Propagation Letters, vol. 20, no. 10, pp. 1973-1977, Oct. 2021, doi: 10.1109/LAWP.2021.3101362
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[Abstract]: Frequency diverse arrays (FDAs) allow the synthesis of dot-shaped radiated patterns in the range-angle space by applying frequency offsets to the antenna elements. Conventional FDAs are usually implemented with costly variable phase shifters and mixers and require an independent feeding network per beam for multibeam operation. In this letter, we propose an innovative approach to FDA that makes use of time-modulated array (TMA) building blocks modeled with inexpensive single-pole dual-throw switches. Our approach is able to simultaneously and independently steer two dot-shaped beam patterns, over the two most significant TMA harmonics, with an almost 90% time modulation efficiency.
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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.2021.3101362.
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