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. Author manuscript; available in PMC: 2013 Nov 11.
Published in final edited form as: Ultrason Imaging. 2013 Jan;35(1):10.1177/0161734612469372. doi: 10.1177/0161734612469372

Figure 11.

Figure 11

(a) Power spectrum found by sweeping a 60-V, three-cycle sine wave excitation from 7 MHz to 20 MHz. (b) Beam plot for 9-MHz transducer prototype with a −6-dB width of roughly 63 degrees.