PRINCIPLES OF WIDEBAND UNIDIRECTIONAL PIEZOELECTRIC TRANSDUCERS
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
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By interweaving the fingers of an interdigital transducer with an earthed meander line and supplying different voltages, in different phases, to the fingers, a variety of interesting performances may be achieved. Two unidirectional transducers and a diplexing transducer are described as examples of the technique. In order to achieve the performances that theory indicates, a number of technical problems need to be overcome. These problems are pointed out and approaches to their solution are suggested.
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