A fractional-N synthesizer with programmable output phase including a phase locked loop having an output signal whose frequency is a fractional multiple of an input reference signal, the phase locked loop including a frequency divider. A synchronization circuit responsive to the input reference signal...http://www.google.de/patents/US7463710?utm_source=gb-gplus-sharePatent US7463710 - Fractional-N synthesizer and method of programming the output phase
