Adaptive quadrature correction for quadrature clock path deskew

US8324949B2 · kind B2 · utility

Assignee

• TEXAS INSTRUMENTS INCORPORATED · US

Inventors

• Alexander Cherkassky · Boyds, US
• David H. Elwart, II · Sachse, US
• Huanzhang Huang · Plano, US
• Li Yang · Cerritos, US
• Matt Rowley · Parker, US
• Mark W. Morgan · Allen, US
• Yanli Fan · Allen, US
• Yonghui Tang · Plano, US

Key dates

• Filing date: Oct 8, 2010
• Grant date: Dec 4, 2012
• Expiry date: Apr 27, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F1/10
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

Quadrature clocking schemes are widely used in modern communications systems, but often suffer from phase imbalance. Conventional solutions that attempt to address this phase imbalance, however, are generally large and use a substantial amount of power. Here, however, a correction circuit is provided that can locally correct for phase imbalance without the need for bulky and high power consuming circuitry.