ZERO OR LOW POWER MEMS MICROPHONE
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United States of America Patent
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Issued Date -
Feb 4, 2016
app pub date -
Jul 30, 2014
filing date -
Jul 30, 2014
priority date (Note) -
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Abstract
Membrane, coil, and magnet configurations for MEMS microphones are provided to minimize or eliminate power consumption by the MEMS microphones. In a microphone, a membrane can be associated with or connected to a coil, wherein the coil can be situated around a permanent magnet. The membrane can be suspended by a set of springs. In one arrangement, the coil can be embedded in the membrane and the magnet can be situated underneath the membrane and coil structure within the microphone. In another arrangement, the magnet can comprise a set of magnet sections, and a membrane and coil structure, wherein the membrane and coil structure can have the coil portion embedded with the membrane portion, and the membrane and coil structure can be situated in proximity to the base of the magnet, and in between respective poles of respective magnet sections, within the microphone.
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