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http://hdl.handle.net/2183/35767 TMA–FDA Range-Angle Beamforming With Periodic Linear-Phase Time-Modulating Waveforms
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R. Maneiro-Catoira, J. Brégains, J. A. García-Naya and L. Castedo, "TMA–FDA Range-Angle Beamforming With Periodic Linear-Phase Time-Modulating Waveforms," in IEEE Antennas and Wireless Propagation Letters, vol. 21, no. 8, pp. 1602-1606, Aug. 2022, doi: 10.1109/LAWP.2022.3175107
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[Abstract]: Frequency diverse arrays (FDAs) provide range-angle time-invariant transmit–receive beamforming, although a fine focus of their radiation patterns is costly since high-resolution mixers and phase shifters are required. An innovative approach to FDAs is proposed in which mixers and phase shifters are replaced by the application of periodic linear-phase time-modulating waveforms to the antenna excitations implemented with 2-bit variable phase shifters controlled with periodic on–off instants of binary sequences, which leads to a simple and precise method for FDA beam focusing.
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