FIG 2C shows {HEAD ~ the time profile} of {TAIL ~ the analog control signal} 21 that is used to adjust the gain factor of the power amplifier 20 
FIG 2C shows { HEAD ~ the time profile } of { TAIL ~ the analog control signal } 21 that is used to adjust the gain factor of the power amplifier 20
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH