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:
Mar. 18, 2003
Filed:
Nov. 30, 1999
Applicant:
Inventors:
Mohammad Jafar Mohseni, San Diego, CA (US);
Brian Butler, La Jolla, CA (US);
Deepu John, San Diego, CA (US);
Haitao Zhang, San Diego, CA (US);
Assignee:
Qualcomm Inc., San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 2/736 ;
U.S. Cl.
CPC ...
H04L 2/736 ;
Abstract
In applications employing phase-shift keying modulation, a phase rotator as disclosed herein is used to rotate the constellation of signal vectors before carrier modulation in order to maximize modulator output power. Such a rotator may be applied in the digital domain (to complex signals having either binary-valued or multi-valued components) or in the analog domain.