Method and system for a digital polar transmitter
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United States of America Patent
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Feb 14, 2012
Grant Date -
Sep 4, 2008
app pub date -
Mar 1, 2007
filing date -
Mar 1, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
Aspects of a system for a digital polar transmitter may include a digital to analog converter circuit (DAC), for which an analog voltage and/or current step size generated in response to a sequence of received binary numbers may be dynamically programmable based on an input control signal. The input control signal may be based on an amplitude modulation (AM) signal. The DAC may receive the sequence of binary numbers, generated based on a phase modulation (PM) signal, from an accumulator circuit. The dynamically programmable-step-size DAC may generate an analog signal, which is amplified by a power amplifier circuit (PA) and transmitted via an antenna. The dynamically programmable-step-size DAC may enable utilization of a linear PA circuit.
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