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:
Dec. 25, 2007
Filed:
Mar. 12, 2002
Mahibur Rahman, Lake Worth, FL (US);
Sumit Anil Talwalkar, Plantation, FL (US);
Andrew Gerald Zocher, Spring Grove, IL (US);
Mahibur Rahman, Lake Worth, FL (US);
Sumit Anil Talwalkar, Plantation, FL (US);
Andrew Gerald Zocher, Spring Grove, IL (US);
Motorola Inc., Schaumburg, IL (US);
Abstract
A transmit path correction system () for compensating for digital DC offsets, I/Q gain imbalances and I/Q phase imbalances includes a mixed signal forward path () and a mixed signal feedback path (). The forward pat (), which is operable to process input data symbols to produce at least one analog output signal, preferably includes a digital DC offset correction circuit () for compensating for digital DC offsets in the forward path () using at least one digital feedback signal (), an I/Q phase equalization circuit () for compensating for the I/Q phase imbalances in the forward path (), and an I/Q gain equalization circuit () for compensating for the I/Q gain imbalances in the forward path () using the digital feedback signal(s) (). The feedback pat () processes the analog output of the forward path () to produce the digital feedback signal(s) ().