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US 2006/0214706 A1Published application
Reduced phase noise frequency divider
OwnerRobert Templeinventor
Life of this patent
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Abstract
A frequency divider with reduced phase noise accepts a single-ended signal, converts it to a differential signal, and processes the differential signal through a series of dividers. The differential output of the divider chain is fed to a differential limiting amplifier which produces the output. The single-ended to differential input signal conversion may be accomplished by a separate stage, or by the first divider stage
Claims12
An improved frequency divider operating on a single-ended input signal comprising:
- an input stage accepting the single-ended input signal and producing a differential output signal,
- a differential divider for dividing the differential signal from the input stage and producing a differential output, and
- a differential limiting amplifier amplifying the differential output signal from the differential divider and producing an output signal.
An improved method of providing frequency division to a single-ended electrical signal comprising:
- converting the single-ended input signal to a differential signal,
- dividing the differential signal converted from the single-ended input signal producing a divided differential output, and
- amplifying the divided differential output using a differential limiting amplifier, producing an output signal.
Dependencies are inferred from the claim text.