Bias application for capacitive micromachined ultrasonic transducers
US10399121B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2016 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Dec 6, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/0292
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In some examples, a capacitive micromachined ultrasonic transducer (CMUT) includes a first electrode and a second electrode. The CMUT may be connectable to a bias voltage supply for supplying a bias voltage, and a transmit and/or receive (TX/RX) circuit. In some cases, a first capacitor having a first electrode may be electrically connected to the first electrode of the CMUT, the first capacitor having a second electrode that may be electrically connected to the TX/RX circuit. Furthermore, a first resistor may include a first electrode electrically connected to the first electrode of the first capacitor and the first electrode of the CMUT. A second electrode of the first resistor may be electrically connected to at least one of: a ground or common return path, or the second electrode of the first capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.