High speed digital to analog converter

申请公布号：EP1876714(A3)

申请号：EP20070018472

申请日期：2004.05.25

申请公布日期：2008.01.23

申请人：

NORTEL NETWORKS LIMITED

发明人：TARASCHUK, TERRANCE;ROBERTS, KIM;STRAWCZYNSKI, LEO

分类号：H03M1/08;H03M1/00;H03M1/66;H03M1/74

主分类号：H03M1/08

摘要：<p>A high speed D/A converter includes a phase aligner, and a vector summation block.. The phase aligner operates to ensure precise phase alignment between corresponding bits of a parallel N-bit digital signal having a data rate of at least 2GHz: The vector addition block performs a vector addition of the phase-aligned bits of the parallel N-bit digital signal. Each bit of the parallel N-bit digital signal can be weighted to ensure a correct additive contribution to the analog signal level appearing at the output of the D/A converter. Vector addition of the weighted bits can be accomplished using a microwave signal combiner network in the form of either a multistage parallel cascade of impedance matched junctions, or a linear cascade of junctions. </p>

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