{TAIL ~ a component} configured to provide {HEAD ~ a local oscillator signal} using a sample of a transmitter signal; and 
{ TAIL ~ a component } configured to provide { HEAD ~ a local oscillator signal } using a sample of a transmitter signal ; and
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH