Voltage controlled oscillator runaway prevention

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9571109
APP PUB NO 20160285466A1
SERIAL NO

14671259

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A feedback module for preventing voltage controlled oscillator (VCO) runaway in a phase locked loop (PLL) circuit can include a first, a second, and a third input to receive a first output signal from a PLL circuit, a reference signal, and a first control signal. The feedback module may also include a feedback circuit to generate a second control signal, the second control signal being coupled to an input of the PLL circuit, wherein the feedback circuit generates the second control signal by comparing a number of cycles of the first output signal to a first threshold, and a number of cycles of the reference signal to a second threshold.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Friend, David M Rochester, US 23 45
Strom, James D Rochester, US 36 123
Wagstaff, Alan P Rochester, US 16 41

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