Design and manufacture of broadband impedance matching device for sonar systems

Document Type : Original Article

Authors

1 imam hossein uni

2 emam khameneii uni

3 resercher

Abstract

Ultrasonic systems use quartz and ceramic transducers to generate sound power. The main limitation is insufficient input electrical power due to low power factor and high impedance. In this work, by presenting a new integrated method, with the help of the so-called direct calculation of the real frequency and the CAD method for piezoelectric transducers, it has been used. The design and construction process includes the following: 1-Determining the equivalent circuit of the piezoelectric transducer based on the admittance measured in the desired frequency range and under real working conditions with a 100-meter cable and a suitable depth in a non-reflecting pool 2- Designing a set of impedance matching networks, using From the computerized Smith chart with ADS and SMITCHCHART.V.4 software 3-Extracting and implementing the simulation model of the converter with adaptation to evaluate the gain and return power and the bandwidth of the designed impedance matching networks and to check the effectiveness of the presented approach through design, implementation, and characterization Impedance matching networks for broadband audio propagation converter 4- Design of peripheral circuits for smartness and selection of suitable IMN; 5) Construction of the desired intelligent EIMN and final testing. The results of this research, in the best matching and ideal conditions, in the simulation with ADS, provide 85 dB improvement for S11 and 26 dB improvement for S21. In working conditions and using real size filter elements, 58 dB improvement was obtained in S11 and 26 dB improvement in S21.

Keywords

Main Subjects

References

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High Speed Craft Engineering
Volume 21, Issue 60 - Serial Number 60
September 2022
Pages 71-84

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