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Characteristics of the transducers evaluated in imaging experiments
| Transmitting PZT 1–3 composite | Receiving PZT ceramic | |
|---|---|---|
|
Aperture (lateral × elevation) |
1.1 mm × 3.5 mm | 1.1 mm × 0.5 mm |
| Center frequency | 4.20 MHz | 19.50 MHz |
| −6 dB bandwidth | 71% | 55% |
| Capacitance (1 kHz) | 263.2 pF | 437.8 pF |
| Dielectric loss (1 kHz) | 0.0147 | 0.0231 |
| Insertion loss | −36.9 dB | −25.1 dB |
