Robust Diaphragm for an Acoustic Device


Robust Diaphragm for an Acoustic Device


This technology involves a microphone diaphragm that is connected to the sur-rounding structure through an internal supporting structure. The internal sup-porting structure of the diaphragm pro-vides a combination of torsional and translational stiffeners, which resemble a number of crossbars. These stiffeners brace and support the diaphragm motion, thus causing its response to not be ad-versely affected by fabrication stresses. The diaphragm maintains exceptional flatness under the influence of either compressive or tensile stresses that may arise during fabrication. The dynamic response of the diaphragm is extremely close to that of an ideal plate over a fre-quency range extending well beyond the audio range.




•  The dynamic characteristics may be readily tuned without adversely influ-encing the flatness or ruggedness of the device


•  The design concept is highly robust and is tolerant of a number of fabrication defects


•  Maintains good dimensional control under the influences of residual stress-es, either compressive or tensile, while having its dynamic response dominated only by a single mode of vibration.



US 7,876,924 & 8,582,795

Patent Information:
For Information, Contact:
Scott Moser
Binghamton University
Ronald Miles
Weili Cui
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