Fig. 3: Experimental results of ultrawideband beamforming and continuous beam steering by the linear quasi-TTD beamformer. | Nature Communications

Fig. 3: Experimental results of ultrawideband beamforming and continuous beam steering by the linear quasi-TTD beamformer.

From: Frequency-comb-steered ultrawideband quasi-true-time-delay beamformer for integrated sensing and communication

Fig. 3

a–c Polar plots of radiation patterns at 12 GHz, 15 GHz, and 18 GHz when the beam is steered to +30°, 0°, and −30°, respectively. d–f Space-frequency contour plots that depict consistent beam direction throughout 12–18 GHz. The experimental results (right) show remarkable agreement with the simulations (left). g Time domain waveforms detected with a receiving antenna placed in the beam direction when the beam is steered to −30° and +30°, respectively. Arb. units, arbitrary units. h Demonstration of seamless beam steering. The beam direction is scanned with an azimuth step of 1° in experiments.

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