Oscillators – Automatic frequency stabilization using a phase or frequency... – Tuning compensation
Patent
1997-07-11
1999-03-30
Mis, David
Oscillators
Automatic frequency stabilization using a phase or frequency...
Tuning compensation
331 1A, 331 8, 331 17, 331 25, 331 27, 331 34, 331 57, 331177R, 331186, 327157, 327159, H03L 708, H03L 7089, H03L 7099, H03L 718
Patent
active
058894373
ABSTRACT:
An improved apparatus for combining frequencies which is capable of generating a constant frequency when an external variation is applied thereto by implementing each block using a differential circuit, whereby it is adaptable to a mobile communication system, includes a phase frequency detector for comparing an input signal with a reference signal and for detecting a frequency or a phase error; a filter for differentially amplifying an output of the phase frequency detector for generating a lower frequency voltage corresponding to the error; a voltage control oscillator for generating a frequency corresponding to an output of the filter; a signal distribution unit for dividing the output of the voltage control oscillator into a predetermined times and for outputting a reference signal to the phase frequency detector; and a reference voltage generator for inputting reference voltages to the voltage control oscillator, respectively.
REFERENCES:
patent: 4068189 (1978-01-01), Wilson
patent: 5491439 (1996-02-01), Kelkar et al.
patent: 5515012 (1996-05-01), Bhushan et al.
patent: 5705947 (1998-01-01), Jeong
LG Semicon Co. Ltd.
Mis David
LandOfFree
Frequency synthesizer with low jitter noise does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frequency synthesizer with low jitter noise, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency synthesizer with low jitter noise will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1218083