Inductive acoustic filters for acoustic devices
US11902727B2 · kind B2 · utility
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4References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2022 |
| Grant date | Feb 13, 2024 |
| Priority date | — |
| Expiry date | Feb 14, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Aspects of the subject technology relate to inductive acoustic filters for acoustic devices. An inductive filter may include a substrate, an etched serpentine channel in a surface of the substrate and extending within the substrate from a first port in the substrate to a second port in the substrate. The inductive filter may also include a polymer cover layer adhesively attached to the surface of the substrate over the etched serpentine channel. The inductive filter may be positioned over an opening in a substrate of an acoustic module, such as a microphone module or a speaker module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.