发明名称 |
Mobile wireless communications device having improved RF immunity of audio transducers to electromagnetic interference (EMI) |
摘要 |
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.
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申请公布号 |
US8249671(B2) |
申请公布日期 |
2012.08.21 |
申请号 |
US201213347343 |
申请日期 |
2012.01.10 |
申请人 |
ZHU LIZHONG;MANKARUSE GEORGE;CORRIGAN MICHAEL;RESEARCH IN MOTION LIMITED |
发明人 |
ZHU LIZHONG;MANKARUSE GEORGE;CORRIGAN MICHAEL |
分类号 |
H04M1/00 |
主分类号 |
H04M1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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