Quadrature receiver and method of compensating for i/q imbalance using a calibration signal

摘要: A quadrature demodulator receiver unit (100) comprises a first filter (360) that may delay an intermediate signal x(t) whose real part is based on sampled in-phase IF (xi(t)) and imaginary (xq(t)). second (366) filters conjugate complex version of the x(t). The coefficients units (360, 366) are determined using calibration signal, for example basis ratios complex-valued spectral components signals xcal(t) obtained from cal(t). filtered delayed recombined to obtain compensated output y(t). be supplied oscillator circuit supplying processing receive (100).