. Author manuscript; available in PMC: 2015 Jun 23.

Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2014 Jun;61(6):1033–1041. doi: 10.1109/TUFFC.2014.2999

TABLE VII.

Comparison Between Measured and Modeling Results for the Array.

	Previous work		Current work
Property	Composite array [15]	Kerfless array [22]	Kerfless array
Material	PZT ceramic 2–2 composite	PZT ceramic	PMN-PT single crystal
Number of elements	64	64	32
Number of open / shorted elements	1 / 0	13 / 2	0 / 0
Average center frequency	35.3 MHz	32 MHz	42.6 MHz
Average bandwidth (–6 dB)	55%	61%	34%
Average sensitivity	403 mV (no gain)	1.65 V (20 dB gain)	653.7 mV (no gain)
Insertion loss^*	22.8 dB	19.9 dB	20.0 dB
–20 dB pulse length^*	94 ns	124 ns	169 ns
Crosstalk	<–24 dB	<–11 dB	<–5 dB
Transmit acceptance angle (–6 dB)^*	22°	22°	12°

Measured on a representative array element.