Acoustic diodes and methods of using same
US9949721B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2013 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Mar 25, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Acoustic diodes, devices incorporating such diodes and methods of using such devices are disclosed. An acoustic diode may include a periodic acoustic grating and a uniform plate. The periodic acoustic grating may include a plurality of gratings. The uniform plate may foe separated from the periodic acoustic grating by a resonant cavity. The acoustic diode may be configured to have a first transmission efficiency for acoustic waves incident on the periodic acoustic grating that is greater than a second transmission efficiency for acoustic waves incident on the uniform plate. The acoustic waves may have a wavelength within a range of wavelengths. Devices incorporating the acoustic diode may include medical imaging devices, such as ultrasound devices, and noise reduction devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.