Operating Manual Vol 1 - ES Documentation

SMIQVector Modulation2.8.1 I/Q ImpairmentFor simulating an impairment of the vector modulation, a residual carrier (LEAKAGE), imbalanced I andQ modulation (IMBALANCE) and a quadrature offset can be entered. The input values for LEAKAGEand IMBALANCE are with reference to the voltage.Table 2-3Parameter setting rangesParameter Setting range ResolutionLEAKAGE 0 ... 50 % 0.5 %IMBALANCE -12 ... +12 % 0.1 %QUADRATURE OFFSET -10 ... +10° 0.1°The following figure shows the effect of I/Q impairment.LEAKAGE:QICarrier LeakageIMBALANCE:Q-+-+IQUADRATURE OFFSET:+Q--+IFig. 2-35Effect of I/Q impairment1125.5555.03 2.69E-8