Piezo transducers

Technology

Piezo transducers transmit and receive waves for sensing and can be based on single or multilayer components.

Transducers typically operate at their resonant frequency with various construction options, beam patterns and power levels. 

Multilayer transducers

The advantage of multilayer transducers is that the improvement of the electromechanical response.

Both receive and transmit response for an n-layer array element is greatly improved, since the individual element capacitance is increased by a factor of n2. Transmit output power is greatly increased due to the increase in element electrical impedance by 1/n2.

Multilayering also decreases Johnson (thermal) receive noise by a factor of n. An added advantage of multilayering is the reduction of the transmit voltage requirement, which reduces heat and crosstalk in both the array and the electronics.