Patent · US Active

Ring voltage controlled oscillator-based phase locked loop with dual charge pump architecture

US12425032B1 · kind B1 · utility

0Cited by

3References

18Claims

0Family size

Assignee

Cadence Design Systems, Inc. · US

Inventors

Prakash Kumar Lenka · Survanagiri, IN
Sumit Gupta · San Jose, US
Vinod Kumar · Pittsford, US
Jitendra Kumar Yadav · Bengaluru, IN
Virvasav Sinha · Bengaluru, IN
Rajashekhar Rao · Birkenfeld, DE

Key dates

Filing date	Sep 27, 2023
Grant date	Sep 23, 2025
Priority date	—
Expiry date	Jan 11, 2044

Classification

Technology area (CPC H)Electricity
CPC primaryH03L7/0891
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

Embodiments included herein are directed towards a ring voltage-controlled oscillator based phase locked loop circuit. Embodiments may include an integral path including a plurality of resistors and a plurality of transistors configured to correct low frequency variations and a proportional path in electrical communication with the integral path, the proportional path including a plurality of transistors and a source degeneration circuit. Embodiments may further include a decoupling capacitor located at a ring voltage-controlled oscillator node in electrical communication with the proportional path, wherein the source degeneration circuit operates to cancel any effect from the ring voltage-controlled oscillator node.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.