Phase locked loop

Details Phase locked loop Phase locked loop

H - Electricity

03

L

H03L 7/097 (2006.01) H03L 7/099 (2006.01) H03L 7/10 (2006.01)

Patent

CA 2292042

A phase locked loop comprising an input comparator capable of generating a deviation signal which is used for driving an oscillator so as to generate an output signal locked to the input signal. The oscillator operates according to a plurality of characteristics under the control of control means comprising searching means arranged to carry out a first search phase by scanning the family of characteristics admitted for the operation of the oscillator by bands of progressively reduced width, according to a general, dichotomic procedure. Upon completion of this first search phase, additional means of fine search are destined to identify the optimum operating point, compensating possible fluctuations of the characteristics.

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