This function returns the amplitude imbalance and phase imbalance
[AMP_IMB_DB, PH_IMB_DEG] = IQCOEF2IMBAL(COMP_COEF) returns the amplitude imbalance and phase imbalance that a given compensator coefficient will correct. Comp_Coef is a scalar or a vector of complex numbers. AMP_IMB_DB and PH_IMB_DEG are the amplitude imbalance in dB and the phase imbalance in degrees.