Digital polar transmitter having a digital front end
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United States of America Patent
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Mar 6, 2018
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N/A
app pub date -
Dec 19, 2016
filing date -
Dec 19, 2016
priority date (Note) -
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Abstract
A digital polar transmitter arrangement having a digital front end (DFE) and a transmit chain is disclosed. The DFE is configured to resample a baseband signal relative to a carrier frequency at a carrier frequency related sample rate, calculate zero crossing positions of the resampled signal, generate delay to time converter (DTC) commands based on the zero crossing positions, calculate amplitude values for the zero crossing positions and generate dynamic phase alignment (DPA) commands based on the amplitude values. The transmit chain is configured to generate an output signal having amplitude and phase modulation based on the DTC and DPA commands.
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