Sub-ranging digital to analog converter for radiofrequency amplification
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United States of America Patent
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Feb 27, 2007
Grant Date -
Mar 9, 2006
app pub date -
Sep 8, 2004
filing date -
Sep 8, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus and method for amplifying a radiofrequency signal using a main Digital to Analog Converter (RFDAC) and a subordinate Digital to Analog Converter (Sub-DAC). The main RFDAC provides a first portion of a N-bit digital output, which specifies the amplification level of the radiofrequency signal, and the sub-DAC provides a second portion of the N-bit digital word. Together, the main RFDAC and the Sub-DAC convert a complete N-bit digital word, where N specifies the resolution of the output radiofrequency signal.
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