Title :
Equivalent circuit for broadband underwater transducers
Author :
Ramesh, R. ; Ebenezer, D.D.
Author_Institution :
Naval Phys. & Oceanogr. Lab., Kochi
fDate :
9/1/2008 12:00:00 AM
Abstract :
A method is presented to determine the equivalent circuits of broadband transducers with 2 resonances in the frequency band of interest. The circuit parameters are refined by least-squares fitting the measured electrical conductance data with this model. The method is illustrated by computing the conductance and susceptance of the equivalent circuits of 3 types of broadband transducers and comparing them with the measured values. The equivalent circuit of a transducer is necessary for designing filters that match the impedances of the transducer and the power amplifier that drives the transducer.
Keywords :
acoustic transducers; electrical conductivity; equivalent circuits; impedance matching; least squares approximations; power amplifiers; underwater sound; broadband underwater transducers; circuit parameters; electrical conductance; electrical conductance data; equivalent circuit; filters; impedance matching; least-squares fitting; power amplifier; resonances; susceptance; Broadband amplifiers; Capacitance; Equivalent circuits; Frequency; Impedance; Matched filters; Piezoelectric transducers; Power amplifiers; Resonance; Ultrasonic transducers; Acoustics; Computer Simulation; Computer-Aided Design; Electronics; Equipment Design; Equipment Failure Analysis; Models, Theoretical; Reproducibility of Results; Sensitivity and Specificity; Transducers; Water;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
