Last week, I presented my paper Tunable N-Path Mismatch Shaping for Multibit Bandpass Delta-Sigma Modulators at the 43rd Asilomar Conference on Signals, Systems and Computers.
From the abstract:
Many radio applications require the use of programmable bandpass Delta-Sigma converter. In the digital-to-analog converter (DAC) used within a Delta-Sigma converter, non-linearities created by DAC element mismatch error can be spectrally shaped to fall outside the signal band. The mismatch shapers within these converters thus also need to be programmable in order to follow the signal band. This paper proposes a new technique that tunes the center frequency of a mismatch noise transfer function while using an arbitrary mismatch shaping algorithm.
A pre-publication copy of the paper can be found here.
Edit-2010: the paper has finally been uploaded to IEEExplore.
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