Patent ID: 7495370
Filing Date: 2009-02-24
Classification: B06B

Abstract:
1. A longitudinal vibrator transducer comprising: a head mass, said head mass comprising a piezoceramic plate for receiving acoustic signals and converting said signals to electrical waveforms; a tail mass; a first piezo-resonator positioned between said head mass and said tail mass for projecting acoustic signals; a coupling member coupling said head mass, tail mass and first piezo-resonator together; electronic circuitry coupled to said piezo-resonator for providing an electrical stimulus to said piezo-resonator to cause said piezo-resonator to project said acoustic signals; and electronic circuitry coupled to said piezoceramic plate to receive said electrical waveforms indicative of said acoustic signals; wherein a mass loading of said head mass is adapted such that the piezo-resonator achieves a low in-band resonance.