{HEAD ~ a main path} configured to amplify {TAIL ~ a power level} of an input signal and generate a path turning signal; and 
configured to amplify
{ HEAD ~ a main path } configured to amplify { TAIL ~ a power level } of an input signal and generate a path turning signal ; and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH