Invention Grant
- Patent Title: Double balanced digital transmitter
- Patent Title (中): 双平衡数字发射机
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Application No.: US13076717Application Date: 2011-03-31
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Publication No.: US08451157B2Publication Date: 2013-05-28
- Inventor: Sami Vilhonen , Rami Tapani Eskola
- Applicant: Sami Vilhonen , Rami Tapani Eskola
- Applicant Address: CH Plan-les-Ouates
- Assignee: ST-Ericsson SA
- Current Assignee: ST-Ericsson SA
- Current Assignee Address: CH Plan-les-Ouates
- Agency: Coats & Bennett, P.L.L.C.
- Main IPC: H03M1/66
- IPC: H03M1/66

Abstract:
A digital-to-analog upconverter directly converts a baseband digital value comprising a plurality of bits to an RF analog signal to combine digital-to-analog operations with frequency upconversion operations. One exemplary digital-to-analog upconverter comprises a plurality of conversion units, one for each of the plurality of bits in the baseband digital value, and an output node coupled to each of the conversion units. Each conversion unit generates a weighted analog signal at a low frequency or at a radio frequency responsive to the corresponding input bit and an oscillator signal at RF. The weighting factor of each conversion unit corresponds to a relative weighting of the corresponding bit. The output node combines the weighted analog signals to generate a combined RF analog signal representative of the baseband digital value.
Public/Granted literature
- US20110210881A1 DOUBLE BALANCED DIGITAL TRANSMITTER Public/Granted day:2011-09-01
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