Patent ID: 9667173
Date: 2017-05-30
CPC Classifications: H02N,H04R

Claim:
1. An ultrasonic transducer, comprising: a first conductive element comprising first and second major surfaces; a second conductive element comprising first and second major surfaces and textural features formed on the first major surface of the second conductive element and arranged in spaced apart relation to the first conductive element with the first major surface of the second conductive element facing toward the first conductive element; and a third conductive element comprising first and second major surfaces and positioned between the first and second conductive elements such that the third conductive element does not contact the first conductive element and the second major surface of the third conductive element physically contacts at least some of the textural features of the second conductive element and forms a resonant cavity, wherein the third conductive element comprises an insulating layer and a conducting layer and wherein the third conductive element is oriented such that the insulating layer is disposed between the conducting layer and the second conductive element.