Table 1.

Measured transducer performance whereby CF is the center frequency, BW is the −6 dB bandwidth, IL is the insertion loss, and PL is the −20 dB pulse length.

Transducer No.	CF (MHz)	BW (%)	IL (dB)	PL (ns)
1	107	43	45	37
2	101	49	44	32
3	105	51	47	31
3(no Parylene)	109	52	54	36