A DMA that jointly tunes its operating frequency and element resonances can match true-time-delay array gain, and a four-state subcarrier probing scheme estimates the user direction in one OFDM symbol.
Electronically steered metasurface antenna,
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Frequency-selective beamforming and single-shot beam training with dynamic metasurface antennas
A DMA that jointly tunes its operating frequency and element resonances can match true-time-delay array gain, and a four-state subcarrier probing scheme estimates the user direction in one OFDM symbol.