Mobile wireless communications device having improved RF immunity of audio transducers to electromagnetic interference (EMI)
US7974582B2 · kind B2 · utility
17Cited by
25References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2008 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | May 9, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49018
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A mobile wireless communications device includes a housing and circuit board carried by the housing and having radio frequency (RF) circuitry and a processor operative with each other. Audio circuitry is carried by the circuit board and an audio transducer assembly, such as a speaker, has electrical contacts that electrically engage the audio circuitry for carrying audio signals between the audio circuitry and audio transducer assembly. A filter is mounted at the audio transducer assembly and reduces radio frequency (RF) electromagnetic interference to the audio transducer assembly during device operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.