Secondary Complex-valued Hydrophone Calibration up to 100 MHz Using Broadband Pulse Excitation and a Reference Membrane Hydrophone

Comparability and reliability of acoustic output declarations of medical devices can be improved by compensating the impact of hydrophone frequency responses on output parameters. However, extended calibration data are needed for the application of waveform deconvolution. This study addresses a method for secondary hydrophone calibration that can be applied outside of metrology institutes by hydrophone users to determine the appropriate frequency responses of working hydrophones in their laboratories. The proposed substitution method provides complex-valued calibration data from 0.5 MHz to 100 MHz.