Quadrature modulator with compensation of I/Q mismatch

摘要

A quadrature modulator accepts inphase and quadrature signal components, and outputs a signal that is quadrature modulated (212). The quadrature modulator system calculates a first cumulative total based on the inphase component and an inphase component fedback from the output. The quadrature modulator calculates a second cumulative total based on the quadrature component and a quadrature component fedback from the output. Based on the first and the second cumulative totals, the time difference between the inphase component and the quadrature component is determined. The inphase component and the quadrature component are adjusted based on the time difference.