Aperture control and apodization in a micro-machined ultrasonic transducer
US6381197B1 · kind B1 · utility
53Cited by
6References
21Claims
0Family size
Inventors
Key dates
| Filing date | Mar 8, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Mar 8, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/348
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A micro-machined ultrasonic transducer (MUT) having aperture, elevation and apodization controlled by apparatus located on the same substrate as the transducer, or by bias voltage control applied to MUT elements, allows for an efficient and compact ultrasonic probe. The control apparatus may take the form of field effect transistors (FET's), micro-machined relays, or doped regions on the substrate, or any other apparatus that may be located on the same substrate as that of the transducer, or by bias voltage sources connected to the MUT elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.