Patent ID: 7164327
Filing Date: 2007-01-16
Classification: H03C,H03D

Abstract:
1. A method for the compensation of the phase asymmetry between the inphase (I) and the quadrature (Q) components in the case of quadrature modulation or demodulation, comprising the steps of: determining the phase error Δφ between the uncompensated I and Q components, obtaining a compensated I component by subtracting from the I component, which is uncompensated, unaltered or multiplied by a constant, the product of the Q component and an error term which is proportional to tan(Δφ/2), and obtaining a compensated Q component by subtracting from the Q component, which is uncompensated, unaltered or multiplied by a constant, the product of the I component and the error term.