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:
Nov. 20, 2001
Filed:
Jan. 31, 2000
Yuda Y. Luz, Buffalo Grove, IL (US);
Ariel Luzzatto, Holon, IL;
Dean E. Thorson, Hoffman Estates, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An automatic gain control apparatus (,) and method for a radiotelephone receiver employs stored inverse transfer function data (,) of the radiotelephone receiver and a gain estimation circuit (,). The gain estimation circuit (,) estimates the input power of received signal (,) and determines a required gain based on a nonlinear portion of the inverse transfer function data (,) of the radiotelephone receiver to provide an improved dynamic range of the receiver. The apparatus and method performs convergence within one iteration to perform fast gain control. In addition, if desired, a DC offset compensation circuit, such as a feedforward DC offset compensation circuit (,), compensates the digital representation of the input signal for use by the gain estimation circuit (,).