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本文介绍了一种慢波导环形换能器及其指向性,文中给出了该换能器的结构及其指向性实验结果。实验结果表明,利用声学慢波导能够有效地改善环形换能器的指向性。文中对该换能器指向性形成的机理做了初步分析。
In this paper, we introduce a slow waveguide ring transducer and its directivity. The experimental results of the transducer structure and its directivity are given in this paper. The experimental results show that the use of acoustic slow waveguide can effectively improve the directivity of the ring transducer. In this paper, the mechanism of the transducer’s directivity is analyzed preliminarily.