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:
May. 17, 2011
Filed:
Feb. 12, 2007
Songping Wu, Sunnyvale, CA (US);
Qing Zhao, Santa Clara, CA (US);
Atul Salhotra, Sunnyvale, CA (US);
Hui-ling Lou, Palo Alto, CA (US);
Thomas B. Cho, Fremont, CA (US);
Songping Wu, Sunnyvale, CA (US);
Qing Zhao, Santa Clara, CA (US);
Atul Salhotra, Sunnyvale, CA (US);
Hui-Ling Lou, Palo Alto, CA (US);
Thomas B. Cho, Fremont, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
An I/Q calibration system for a quadrature amplitude modulation (QAM) mode transceiver includes a signal generator that generates reference in-phase (I) and quadrature (Q) signals. An I/Q mismatch compensation module generates compensated I and Q signals based on the reference I and Q signals and amplitude and phase correction signals. An I/Q mismatch calibration module generates the amplitude and phase correction signals. A phase stepper module varies a phase of the reference I and Q signals based on the amplitude and phase correction signals.