Abstract
The radiation patterns of disk transducers connected in a recently reported novel manner by Laughlin, Drews, and Wilson is studied. In this connection, the back-face plating of a transducer is divided into two electrodes which constitute the only transducer-to- transceiver connection, and a dual-beam radiation pattern resulted. However, we found that repolarizing one half of the transducer re- stored a single beam pattern. This method of connection and regionally repolarizing the piezoelectric transducer appears highly advantageous for use in fabrication of both miniature transducers and various trans- ducer arrays (e.g., linear, annular, and matrix).
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