Ultrasound generation
US10468009B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2013 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Dec 12, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B2201/76
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An ultrasound generator having a signal generator; and to generate a pulsed drive signal from a modulating signal, the pulsed drive signal having at least a zero output level, a positive output level and a negative output level. The position and width of pulses are defined by at least first and second switching angles per half cycle of the modulating signal. In part of the range of the modulating signal one switching angle increases while the other switching angle decreases simultaneously such that the fundamental frequency of the pulsed drive signal increases or decreases with the modulating signal and such that a selected harmonic component of the generated pulsed drive signal is maintained below a first threshold. A transducer is arranged to generate ultrasound in response to the pulsed drive signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.