In one aspect, the present invention is directed to a compensator for compensating linearity errors, such as harmonic distortion and intermodulation distortion, in devices. The compensator includes a means for phase-shifting and a means for exponentiation to generate a compensation signal such that the...http://www.google.com/patents/US6344810?utm_source=gb-gplus-sharePatent US6344810 - Linearity error compensator
