Dual-path phase locked loop (PLL) with closed-loop VCO temperature compensation

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United States of America

PATENT NO 12255663
APP PUB NO 20240313792A1
SERIAL NO

18185325

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Abstract

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In certain aspects, a system includes a voltage-controlled oscillator (VCO), a phase detector configured to receive a reference signal, a frequency divider coupled between an output of the VCO and the phase detector, a phase-to-current circuit coupled to an output of the phase detector, and a temperature circuit configured to output a temperature-dependent voltage. The system also includes a switching circuit configured to selectively couple the phase-to-current circuit to an input of the VCO and configured to selectively couple the temperature circuit to the input of the VCO.

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Patent Owner(s)

  • QUALCOMM INCORPORATED

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Wu-Hsin San Diego, US 18 54
Gupta, Arpit San Diego, US 27 261
Moslehi, Bajestan Masoud San Diego, US 11 43
Panikkath, Vinod San Diego, US 15 3

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