Guard ring in cavity PCB
US11700492B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2020 |
| Grant date | Jul 11, 2023 |
| Priority date | — |
| Expiry date | Aug 5, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A microphone assembly including an acoustic transducer configured to generate an electrical signal responsive to acoustic activity, an integrated circuit electrically coupled to the acoustic transducer and configured to receive the electrical signal from the acoustic transducer and generate an output signal representative of the acoustic activity, a cover, and a substrate. The substrate including a first surface and a second surface to which the cover is coupled. The second surface is disposed at a perimeter of the substrate and the first surface is raised with respect to the second surface. The cover is coupled to the substrate to form a housing in which the transducer and the integrated circuit are disposed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.