US Patent 7221237 Frequency tunable device
Patent 7221237 was granted and assigned to National Tsing Hua University on May, 2007 by the United States Patent and Trademark Office.
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Patent abstract
A frequency tunable device includes a substrate, and a capacitor structure supported by the substrate and including a ferroelectric film and first and second electrodes. The ferroelectric film has two opposite sides, and is made from a ferroelectric material having a formula of Pb1−xBaxZrO3, where x is a positive number greater than 0.3 and less than 0.6. The first and second electrodes are respectively formed on the sides of the ferroelectric film. The dielectric constant of the ferroelectric film varies with a voltage applied to the first and second electrodes.
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US Patent 07221237 Frequency tunable device US Patent 7221237 Frequency tunable device
Infobox
Patent Number
0722123700
Patent Number
722123700
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
072212370
Date of Patent
May 22, 2007
0Patent Application Number
109824970
Date Filed
November 5, 2004
0Official Website
Patent Primary Examiner
Edits on 25 Sep, 2022
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
072212370
Date of Patent
May 22, 2007
0Patent Application Number
109824970
Date Filed
November 5, 2004
0Official Website
Patent Primary Examiner
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US Patent 07221237 Frequency tunable device
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07221237
Date of patent
May 22, 2007
Patent application number
10982497
Date Filed
November 5, 2004
Patent primary examiner
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