{TAIL ~ The error path} controls a gain or a phase of {HEAD ~ a second order intermodulation component} in the path turning signal based on the input signal, to generate an intermodulation compensation signal 
{ TAIL ~ The error path } controls a gain or a phase of { HEAD ~ a second order intermodulation component } in the path turning signal based on the input signal , to generate an intermodulation compensation signal
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH