Unidirectional transducer for lamb-wave delay lines |
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| Authors: | Toda Kohji Shinoda Yoshiaki |
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| Affiliation: | National Defense Academy, Department of Electrical Engineering, Yokosuka, Japan; |
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| Abstract: | A new type of unidirectional transducer is proposed and demonstrated. This transducer consists of three electrode groups, one on the bottom surface. The others are interdigital electrode groups 60° out of phase and on the top surface. Better than 20 dB of directionally was obtained for the zeroth symmetrical mode of a Lamb wave. |
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