Without the inventive IQ scaling, {HEAD ~ the gain factor} of the power amplifier 20 must be varied over {TAIL ~ a wide dynamic range}, and the control signal 21 therefore also has to pass over a wide voltage range from the minimum voltage UMIN2 UP to the maximum voltage UMAX and back to the minimum voltage UMIN2 
varied over
Without the inventive IQ scaling , { HEAD ~ the gain factor } of the power amplifier 20 must be varied over { TAIL ~ a wide dynamic range } , and the control signal 21 therefore also has to pass over a wide voltage range from the minimum voltage UMIN2 UP to the maximum voltage UMAX and back to the minimum voltage UMIN2
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH