H - Electricity – 03 – L
Patent
H - Electricity
03
L
328/28, 343/69
H03L 7/08 (2006.01) G01S 1/00 (2006.01)
Patent
CA 1321419
Abstract of the Disclosure A phase signal estimator receives a first phase signal having a first frequency and generates a first filtered signal phase-locked with the first phase signal as an estimated phase signal. A phase locked loop sec- tion receives a second phase signal having a second fre- quency which corresponds to a predetermined multiple of the first frequency of the first phase signal, and out- puts a second filtered signal phase-locked with the second phase signal as a desired phase signal. In the phase locked loop section, a phase comparator receives the second phase signal and the desired phase signal and generates a phase difference signal. A filter low-pass filters the phase difference signal from the phase com- parator. A signal generator generates a signal having a predetermined frequency in accordance with the output from the filter. A phase adder adds the signal having the predetermined frequency from the signal generator and the estimated phase signal from the phase signal estimator and outputs the desired phase signal. A fre- quency compensator is selectively connected to the esti- mated phase signal, the second phase signal, and the desired phase signal so that the phase locked loop sec- tion has substantially the same low-pass filtering response characteristic as the first frequency of the first phase signal.
580253
Anritsu Corporation
Ridout & Maybee Llp
LandOfFree
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