[Application of Power Amplifier] Research on High Frequency Broadband Underwater Acoustic

With the rapid development of underwater acoustic signal processing technology, in order to obtain more underwater information and improve the detection and recognition effect of sonar, it is necessary to make the aftershock signal of the sonar under pulse excitation as small as possible, that is, the numerical value of the mechanical cause is low.

With the rapid development of underwater acoustic signal processing technology, in order to obtain more underwater information and improve the detection and recognition effect of sonar, it is necessary to make the aftershock signal of the sonar under pulse excitation as small as possible, that is, the numerical value of the mechanical cause is low. This requires the design and manufacture of high-frequency broadband sonar. The high-frequency broadband transducer is the basis for the generation and acquisition of high-frequency broadband sonar signals. On the one hand, it can improve the performance of the entire sonar system. Carry more information for underwater detection and identification; on the other hand, it also has significant advantages in signal transmission, such as reducing waveform distortion, improving reliability and confidentiality, and improving system resolution.

In the underwater communication system, the underwater acoustic signal is often excited by a power amplifier, and is transmitted over a long distance underwater through a transducer, and then the signal is amplified by the receiving end to transmit information. In this process, the high-frequency broadband transducer plays an important role.

The main difficulty in realizing high-efficiency broadband transducers lies in the acoustic impedance mismatch between piezoelectric materials, which reduces the transmission efficiency of the transducer in water. When the sound wave is transmitted vertically from the piezoelectric material to the water medium, due to the large difference in acoustic impedance between the two, most of the sound waves are reflected at the interface, and only a small part of the sound waves can be transmitted. By adding a matching layer to the radiating end of the piezoelectric wafer, the transition between the acoustic impedance of the piezoelectric material and the working medium (such as water) can be realized, which is conducive to the propagation of acoustic energy. The physical structure model of the matching layer transducer working in water is shown in the figure.

The realization of high-efficiency broadband transducers has led to rapid development in the processing speed of underwater acoustic signals. Of course, this is not the only factor that determines the propagation speed of underwater acoustic signals. The continuous upgrading of the functions of various components in the sonar system has brought a certain impact on the propagation speed of underwater acoustic signals. The ATA series of underwater acoustic power amplifiers have been widely used in the field of underwater acoustic signal propagation research and practical applications in recent years, and have been positively evaluated. ATA-L series underwater acoustic power amplifier has the characteristics of wide frequency band, high power, etc., the maximum output voltage is 1020Vrms, 1000VA power, and it can drive 0~100% resistive or non-resistive load.

ATA-L parameter index:

Through the above introduction, I believe you have a clear understanding of the importance of high-frequency broadband underwater acoustic transducer research and underwater acoustic power amplifier in the process of underwater acoustic signal propagation. If you are interested in Aigtek products, please click Learn more on the official website of www.aigtek.com.