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. Author manuscript; available in PMC: 2013 Mar 6.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2011 Dec;58(12):2646–2658. doi: 10.1109/TUFFC.2011.2127

Fig. 12.

Fig. 12

(a) LiNbO3 focused transducer’s pulse-echo response using Panametrics 5900PR (gain = 40 dB): center frequency is 82.91 M Hz, −6-dB bandwidth is 51.58%, and received peak-peak voltage is 1769 mV. (b) LiNbO3 focused transducer’s pulse-echo response using BiCMOS preamplifier with Sallen-Key filter: center frequency is 78.23 M Hz, −6-dB bandwidth is 51.70%, and received peak-peak voltage is 1812 mV. (c) LiNbO3 focused transducer’s pulse-echo response using Panametrics 5900PR (gain = 38 dB): center frequency is 82.76 M Hz, −6-dB bandwidth is 53.73%, and received peak-peak voltage is 154 6mV. (d) LiNbO3 focused transducer’s pulse-echo response using CMOS preamplifier with Sallen-Key filter: center frequency is 83.54 MHz, −6-dB bandwidth is 52.33%, and received peak-peak voltage is 1468 mV.