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1. 发明授权

US07084689B2 Method and apparatus for generating non-skewed complementary signals through interpolation 失效
标题翻译：通过插值产生非偏斜互补信号的方法和装置
公开(公告)号：US07084689B2
公开(公告)日：2006-08-01
申请号：US10988455
申请日：2004-11-12
申请人： Juan-antonio Carballo , Fadi Hikmat Gebara
发明人： Juan-antonio Carballo , Fadi Hikmat Gebara
IPC分类号： H03K3/00
CPC分类号： G06F1/04 , H03K5/1515
摘要： A complementary digital signal generator circuit and method receives a periodic digital signal, such as a square wave, as an input and generates at the output complementary versions of the digital signal delayed by matching increments of delay with minimum skew at GHz frequencies. The digital signal is processed by inverters and interpolators which may be readily matched in size and functional characteristics by close proximity placement on integrated circuits. An inverted and first delayed version of the original digital signal is applied to both inputs of a first interpolator, to generate at the output of the interpolator the complement of the digital signal as delayed by the first delayed and the delay introduced by the interpolator. The inverted and first delayed digital signal is inverted and second delayed by a second matching inverter and applied as one input to a second interpolator. The second input of the second interpolator is the original digital signal. The output of the second interpolator is the digital signal delayed by a corresponding combination of the first delay and the delay introduced by the second interpolator. When the first and second interpolators are matched, in the manner of the first and second inverters, the two interpolator outputs provide the digital signal and its complement with substantially no skew and matching increments of delay.
摘要翻译：互补的数字信号发生器电路和方法接收诸如方波的周期性数字信号作为输入，并在数字信号的输出互补版本处产生延迟的具有GHz频率的最小偏移的延迟匹配延迟的输出互补版本。数字信号由逆变器和内插器处理，其可以通过集成电路上的紧密贴近来容易地匹配尺寸和功能特性。将原始数字信号的反相和第一延迟版本应用于第一内插器的两个输入，以在内插器的输出处产生由第一延迟延迟的延迟和由内插器引入的延迟的数字信号的补码。反相和第一延迟数字信号被反相，并且被第二匹配反相器延迟，并作为一个输入施加到第二内插器。第二内插器的第二输入是原始数字信号。第二内插器的输出是由第二内插器引入的第一延迟和延迟的相应组合延迟的数字信号。当第一和第二内插器被匹配时，以第一和第二反相器的方式，两个内插器输出提供数字信号及其补码，基本上没有偏移和匹配的延迟增量。

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