Low loss thin film capacitor and methods of manufacturing the same
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United States of America Patent
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Issued Date -
Dec 7, 2006
app pub date -
Apr 3, 2006
filing date -
Apr 13, 2005
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Abandoned
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Abstract
In accordance with the teachings described herein, low loss thin film capacitors and methods of manufacturing the same are provided. A low loss thin-film capacitor structure may include first and second electrodes and a polar dielectric between the first and second electrodes. The polar dielectric and the first and second electrodes collectively form a capacitor having an operational frequency band. The capacitor structure may also include one or more layers that affect the acoustic properties of the thin-film capacitor structure such that the capacitor absorbs RF energy at a frequency that is outside of the operational frequency band. A method of manufacturing a low loss thin-film capacitor may include the steps of fabricating a capacitor structure that includes a polar dielectric material, and modifying the acoustic properties of the capacitor structure such that the polar capacitor absorbs RF energy at a frequency that is outside of the operating frequency band of the capacitor structure.
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