发明名称 |
High speed digital to analog converter |
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> |
申请公布号 |
EP1876713(A2) |
申请公布日期 |
2008.01.09 |
申请号 |
EP20070018471 |
申请日期 |
2004.05.25 |
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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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