A voltage controlled oscillator is supplied with {HEAD ~ a part} of {TAIL ~ the output} of the phase comparator which controls its oscillation frequency 
of
A voltage controlled oscillator is supplied with { HEAD ~ a part } of { TAIL ~ the output } of the phase comparator which controls its oscillation frequency
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH