US Patent 8068557 IQ-modulator pre-distortion
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Patent abstract
An IQ-modulator pre-distorter includes an iteratively updated digital filter (gQ0, gQ1) for filtering one of the branches of an IQ-signal to compensate for IQ-modulator generated amplitude errors. An iteratively updated digital filter (cQI0, cQI1), cross-connected from one of the branches to the other branch, filters one of the components of an IQ-signal to compensate for IQ-modulator generated inter-modulation between the branches. Iteratively updated compensators (dcI, dcQ) counteract IQ-modulator generated offset errors.
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US Patent 08068557 IQ-modulator pre-distortion US Patent 8068557 IQ-modulator pre-distortion
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Patent Number
0806855700
Patent Number
806855700
Edits on 30 Mar, 2023
Golden AI
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Is a
Patent Jurisdiction
Patent Number
080685570
Date of Patent
November 29, 2011
0Patent Application Number
118168540
Date Filed
February 24, 2005
0Patent Primary Examiner
Edits on 27 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
080685570
Date of Patent
November 29, 2011
0Patent Application Number
118168540
Date Filed
February 24, 2005
0Patent Primary Examiner
Edits on 14 Dec, 2021
Golden AI
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US Patent 08068557 IQ-modulator pre-distortion
Infobox
Is a
Patent jurisdiction
Patent number
08068557
Date of patent
November 29, 2011
Patent application number
11816854
Date Filed
February 24, 2005
Patent primary examiner
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