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Testing Of Active Feedback Applied To Piezoelectric Devices, William H. Barrow
Testing Of Active Feedback Applied To Piezoelectric Devices, William H. Barrow
Retrospective Theses and Dissertations
The purpose of this research is to test a unique implementation of active feedback applied to a low frequency piezoelectric transducer. Understanding that active feedback can be used to shape the frequency response of an electrical system a method for applying active electroacoustical feedback will be used to obtain a wider acoustical bandwidth in a piezoelectric transmitter. By applying active feedback to a resonant device its bandwidth was increased by a factor of 2.5. This is a significant improvement for applications where minimum electrical phase shift versus frequency is desired.