Oscillators – Automatic frequency stabilization using a phase or frequency... – With reference oscillator or source
Patent
1991-03-15
1992-05-05
Grimm, Siegfried H.
Oscillators
Automatic frequency stabilization using a phase or frequency...
With reference oscillator or source
331DIG2, H03L 706
Patent
active
051111616
ABSTRACT:
A designated burst signal specified in a designated frequency is detected from an all-inclusive signal specified in a plurality of frequencies, by multiplying a frequency of the all-inclusive signal by a multiplying factor so as to produce a multiplied output signal, performing a phase-lock loop operation between the multiplied output signal and an oscillated signal produced for performing the phase-lock loop operation and specified in a multiplied frequency of the designated frequency by the multiplying factor, so as to produce a phase-lock output signal and comparing the multiplied output signal and the phase-lock output signal for producing a detected output signal representing whether the designated burst signal is in the all-inclusive signal.
REFERENCES:
patent: 4787097 (1988-11-01), Rizzo
Fujitsu Limited
Grimm Siegfried H.
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