An embedded signal transmitter for UAC based on H-bridge class-D power amplifier

The signal transmitter for underwater acoustic communication (UAC) is a core component of underwater acoustic equipment. To satisfy the demand of underwater acoustic transmitter for small size and high source level, an embedded power amplifier based on H-bridge topology and an independent matching network are designed and implemented. The integrative performance is tested by water pool experiment, and the feasibility and advancement are verified. The test result shows that the prototype can reach the aim of 184.25dB to 187.19dB emission source level and 19% of average total electro-acoustic conversion efficiency within the frequency range of 8∼16kHz, which can meet the needs of shipboard and embedded request at 180 × 120 × 70 (mm) 3 volume.