论文信息 - A quadrature data-dependent DEM algorithm to improve image rejection of a complex /spl Sigma//spl Delta/ modulator

A quadrature data-dependent DEM algorithm to improve image rejection of a complex /spl Sigma//spl Delta/ modulator

A data-dependent DEM algorithm is controlled by the quadrature bitstreams of a complex /spl Sigma//spl Delta/ modulator. The quadrature feedback paths of the modulator are dynamically matched, without increasing the in-band noise. Test chips with an initial 20% mismatch have a typical image rejection ratio of 61 dB with DEM.

J.H. Huijsing | L.J. Breems | E.C. Dijkmans

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