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Pulse-Echo Design Example with Electrical Matching Network. This example shows the electrical input impedance, innsertion loss, and receive impulse response waveform and spectrum for a 13 mm diameter 5.0 Mhz transducer with two matching layers, operating in water.

PIEZOCAD INPUT PARAMETERS:
Program version: PiezoCAD for Windows Version 3.0
Data file: C:\PZCAD\DATA\EXAMPLES\BRODBAND
Date and time calculated: 06-19-2001 12:39:07
Pulse-echo design example with electrical matching network
FREQUENCY AND TIME: Design center frequency Fd=5.000 MHz
Frequency range of calculation: 0.000 to 10.000 MHz
Design center frequency Fd=5.000 MHz Freq range of calculation: 0.00010.000 MHz
Number of points in frequency domain: 100 Time domain: 1024
PIEZOELECTRIC ELEMENT DESCRIPTION:
Element size: 13 mm disk Element area: 132.7323 mm^2
PARAMETER VALUE UNITS
Thickness 0.3955 mm
Parallel frequency Fp 5.4994 MHz
Material PZT-5A
Polarity +
ACOUSTIC LAYERS:
FACE MATL SHEAR LONG. LONG LOSS LOSS LOSS REL THICK THICK
PLATE NAME VEL. VEL. IMPED. ALPHA AT F N AREA Lambdas  
No.   m/sec m/sec MRavls dB/cm MHz     At Fd mm
1 Filled epoxy 1286.9 1820.0 8.800 0.000 1.000 1.00 1.000 0.2500 0.0910
2 Polyurethane 1513.2 2140.0 2.301 0.000 1.000 1.00 1.000 0.2500 0.1070
No Backplates
ACOUSTIC LOAD IMPEDANCES: Rear: 6.000 MRayls Front: 1.500 MRayls
ELECTRICAL TERMINATIONS:
Transmitter output=50.0 Ohms Receiver input=50.0 Ohms
ELECTRICAL MATCHING NETWORK:
1. Shunt L 0.433 uH, 2. Xfmr 13:10 turns, 3. Coaxial cable 50 Ohms 1 m 0. dB/km at 1 MHz

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