Capacitive micromachined ultrasound transducers having varying properties
US10413938B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2015 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Jul 18, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/5207
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In some examples, a CMUT array may include a plurality of elements, and each element may include a plurality of sub-elements. For instance, a first sub-element and a second sub-element may be disposed on opposite sides of a third sub-element. In some cases, the third sub-element may be configured to transmit ultrasonic energy at a higher center frequency than at least one of the first sub-element or the second sub-element. Further, in some instances, the sub-elements may have a plurality of regions in which different regions are configured to transmit ultrasonic energy at different resonant frequencies. For instance, the resonant frequencies of a plurality of CMUT cells in each sub-element may decrease in an elevation direction from a center of each element toward the edges of the CMUT array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.