Flexible dielectric variable capacitance system
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United States of America Patent
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Nov 19, 2013
Grant Date -
Sep 29, 2011
app pub date -
Sep 24, 2009
filing date -
Sep 25, 2008
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Abstract
A variable capacitance system including a first electrode, a second electrode, and a layer of elastically deformable dielectric material positioned between the first and the second electrode. An electret forms with the first electrode a first capacitor, and the electret forms with the second electrode a second capacitor. Capacitances of the first and second capacitors vary with deformation of the dielectric layer. The first electrode, the second electrode, and the first electret follow deformations of the dielectric layer and a deformation of the dielectric layer causes an inverse variation of capacitances of the first and of the second capacitor. The first electrode includes slots in which the electret is located, wherein the edge of the slots forms with the electret located inside the slots the first capacitor, wherein the electret is made on or in the dielectric layer.
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