Method and apparatus for single port modulation using a fractional-N modulator

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United States of America Patent

PATENT NO 9035682
APP PUB NO 20140184289A1
SERIAL NO

13730932

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Abstract

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A method and apparatus for single port modulation of a phase locked loop frequency modulator includes a phase locked loop with a voltage controlled oscillator (VCO) and a integer loop for multiplying up the output of the VCO which is divided by a fractional-N modulator and divider in the feedback control. The integer loop enables the use of a high frequency reference oscillator that allows a closed loop response of the phase locked loop having a bandwidth that is wider than the modulation bandwidth.

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Patent Owner(s)

  • MOTOROLA SOLUTIONS, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Charaska, Joseph A Melrose Park, US 11 104
Einbinder, Stephen B Plantation, US 10 95
Gailus, Paul H Prospect Heights, US 51 2197
Stengel, Robert E Pompano Beach, US 88 2613

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