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. Author manuscript; available in PMC: 2022 Jul 1.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2021 Jun 29;68(7):2419–2431. doi: 10.1109/TUFFC.2021.3065952

Fig. 3.

Fig. 3.

Schematics showing (a) the Tx beamforming scheme at two illustrative locations where the same subaperture of 19 LF elements is used to generate a focused beam. Line A is located at the edge of the array and line B is closer to the central part of FOV. The focused beam generated for image line A is effectively steered. The receive apertures for line A and line B are shown in blue and red, with Rx elements common to both image lines shown in black; (b) parameters used in the calculation of the round-trip time-of-flight for beamforming.