| 摘要 |
Illustrative embodiments provide an apparatus for phase shifting to produce uniform phase steps in a predictable manner to improve the linearity of conversion. The apparatus comprises a phase selector for selecting two or more phases to create selected phases and a phase interpolator capable of receiving the selected phases. The apparatus further comprises a set of digital to analog converter cells connected to the phase interpolator, wherein interpolator weight distribution among the set of digital to analog converter cells is non-linear, and a thermometer code in communication with the set of digital to analog converter cells, wherein the thermometer code adjusts output of the set of digital to analog converter cells to phase shift the selected phases.
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