Patent ID: 8913688
Filing Date: 2014-12-16
Classification: H03F,H03L,H04L

Abstract:
1. An apparatus, comprising: a pre-distorter coupled to receive a first signal; wherein the pre-distorter is configured to convert first values of the first signal into second values for a second signal; wherein the pre-distorter includes a converter for converting the first values to the second values; wherein the converter is configured to exchange the first values with the second values corresponding thereto; wherein the second values are replacement values for the first values, the replacement values being based on an inverse waveform of the first signal; and a phase interpolator coupled to receive the second signal, wherein the inverse waveform is related to a phase linearity error of the phase interpolator; wherein the second values are associated with nonlinearity of the phase interpolator; wherein the phase interpolator is configured to provide an interpolated output from the second signal; and wherein the second signal is adjusted for the nonlinearity of the phase interpolator by use of the second values.