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.

Date of Patent:
Aug. 11, 2026

Filed:

Jun. 04, 2024
Applicant:

Apple Inc., Cupertino, CA (US);

Inventors:

Richard Y. Su, Santa Clara, CA (US);

Boon-Aik Ang, Los Altos, CA (US);

Dennis M. Fischette, Jr., Mountain View, CA (US);

Samed Maltabas, Santa Clara, CA (US);

Shaobo Liu, Sunnyvale, CA (US);

Assignee:

Apple Inc., Cupertino, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/081 (2006.01); H03L 7/089 (2006.01); H03L 7/197 (2006.01);
U.S. Cl.
CPC ...
H03L 7/1974 (2013.01); H03L 7/0812 (2013.01); H03L 7/0814 (2013.01); H03L 7/0891 (2013.01);
Abstract

A fractional frequency-divider circuit is disclosed. The fractional frequency-divider circuit includes a phase generation circuit that receives an input clock signal that has a first frequency, and generates multiple phase signals using the input clock signal. The fractional frequency-divider circuit also includes a phase selection circuit that selects different ones of the multiple phase signals at different times to generate an output clock signal with a second frequency such that a ratio of the first frequency to the second frequency is a non-integer value.


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