Patent ID: 6859509

Claim:
A wide bandwidth phase-lock loop circuit, comprising: a frequency detector arranged to measure an input signal of unknown frequency to detect frequency information of the input signal, the input signal being variable in frequency over a plurality of predetermined frequency ranges; a frequency range selector connected to the frequency detector; a phase-locked loop connected to the frequency range selector and capable of phase-locking with the input signal when configured to do so for each of the plurality of predetermined frequency ranges, wherein the frequency range selector automatically determines the frequency range for the input signal and configures the phase-locked loop to generate an output signal within one of the plurality of predetermined frequency ranges based on the frequency information of the input signal, said wide bandwidth phase-lock loop circuit being operable for phase-locking to said input signal without use of a sweep generator circuit to produce a sawtooth signal for sweeping a voltage controlled oscillator through a frequency band around an estimated frequency of said input signal.