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:
Jan. 27, 2004
Filed:
Dec. 18, 2000
Motorola, Inc., Schaumburg, IL (US);
Abstract
In a radio circuit (299) that forwards a signal pair (I,Q) by first ( , I) and second ( , Q) channels, by converting the signal pair (I,Q) from a digital form (I , Q ) to an analog form (I , Q ), a gain controller ( ) monitors differences between the overall gains (G , G ) in the channels and corrects a gain imbalance by feeding back a gain determining control signal (W) to one of the channels. The gain controller ( ) has digital comparators ( ) at the inputs ( ) of the channels and analog comparators at the outputs ( ) of the channels. Intrinsic offsets of the analog comparators are determined and compensated by subtracting corresponding offsets from the digital comparators.
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