The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 2026
Filed:
Jan. 13, 2025
Cadence Design Systems, Inc., San Jose, CA (US);
Satya Someswara Kaushik Yanamandra, Gaithersburg, MD (US);
Benjamin L. Heilmann, Southport, NC (US);
Douglas Scott Shelton, Kingsville, MD (US);
Cadence Design Systems, Inc., San Jose, CA (US);
Abstract
Phase interpolation techniques for clock and data recovery in high-speed serial interfaces. A phase interpolator interpolates between four input clock signals phase-offset by 90 degrees to generate eight output clock signals phase-offset by 45 degrees. The phase interpolator includes primary and secondary mixers that adjust phase values using a mixed thermometer-binary encoding scheme. The primary mixers use most-significant-bit (MSB) thermometer bits for coarse steps and least-significant-bit (LSB) thermometer and binary bits for fine half-steps. The secondary mixers additionally employ boundary bits to maintain proper phase relationships across quadrant transitions. The encoding scheme can reduce routing complexity while preserving monotonic phase progression over the full 360-degree range.