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:
Sep. 22, 2026
Filed:
Oct. 11, 2024
Qualcomm Incorporated, San Diego, CA (US);
Seuk Son, San Diego, CA (US);
Ying Duan, San Diego, CA (US);
Qinqing Cao, San Diego, CA (US);
Abhay Dixit, San Diego, CA (US);
QUALCOMM Incorproated, San Diego, CA (US);
Abstract
A phase interpolator includes a plurality of source-coupled transistor pairs and a plurality of current sources. The plurality of source-coupled transistor pairs may be configured to receive different phase shifted versions of an input signal. A differential output of each source-coupled transistor pair may be coupled to a differential output of the phase interpolator. Each current source in the plurality of current sources may be configured to supply a portion of a tail current to one or more source-coupled transistor pairs in the plurality of source-coupled transistor pairs at a level defined by a codeword. Step changes in amplitude of the tail current may occur in response to incremental changes in the codeword. The step changes in amplitude may vary with the amplitude of the tail current.