High sensitivity and high capacitance of the cylindrically shapedw-membrane hydrophone

摘要

In hydrophone designs, intelligent use of structural effects isnthe key to obtaining high sensitivity. The uses of the moonie and springnstructures are good examples of this approach. These transducers can benregarded as mechanical stress converters and amplifiers by which thenhydropressure is transferred into a desired stress mode and amplified innmagnitude for elastoelectric conversion. In this paper, a structurenreferred to as the w-membrane is introduced for hydrophone construction.nBy combining a cylindrical design with the w membrane structure, anhydrophone with very high sensitivity is designed. In addition, highncapacitance is another advantage of this configuration. The analysis isncarried out based on the concepts of stress conversion andnamplification, and numerical results are presented