Suitability of acoustic power amplifiers as power amplifiers in underwater communication systems

Abstract

The paper presents selected acoustic power amplifiers from among those currently available. The results of a series of measurements characteris ing the amplifiers are presented. The measured amplitude and phase characteristics as a function of frequency for four selected amplifiers are analysed. The spectra of the output signal in the band from 4 kHz to 30 kHz are presented. The usefulness of the selected amplifiers in an underwater communication system is assessed.

Keywords

• power amplifier
• transmitter
• underwater communications
• amplitude
• phase
• spectrum