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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 5.

Figure 5

(a) Impedance plot for the short-circuit prototype with large spectral peak around 18.5 MHz. (b) Beam plot for the short-circuit prototype at 18.5 MHz with −6-dB beam width of roughly 55 degrees.