Boosted-bias tunable filter with dynamic calibration

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United States of America Patent

PATENT NO 7821362
SERIAL NO

12365708

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In a signal communication device, a frequency-selective filter has at least one component that is biased by a control signal to establish a center frequency of the frequency-selective filter. A closed-loop bias generator is provided to generate the control signal and to adjust the control signal based, at least in part, on a comparison of the control signal and a reference signal.

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Patent Owner(s)

Patent OwnerAddress
SPREADTRUM COMMUNICATIONS (SHANGHAI) CO LTDSPREADTRUM CENTER BLDG NO 1 2288 ZUCHONGZHI ROAD SHANGHAI CHINA SHANGHAI

International Classification(s)

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  • 2009 Application Filing Year
  • H04B Class
  • 6815 Applications Filed
  • 4420 Patents Issued To-Date
  • 64.86 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20092010201120122013201420152016201720182019202020212022202320240255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Khitrov, Michael Cupertino, US 3 16
Sheng, Samuel W Los Gatos, US 68 1554

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Patent Citation Ranking

  • 5 Citation Count
  • H04B Class
  • 1.28 % this patent is cited more than
  • 15 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges15393289145887049211915145001 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +0255075100125150175200225250275300325350375400425

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