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:
Jun. 12, 2012
Filed:
May. 04, 2010
Applicants:
James Qiu, Carlsbad, CA (US);
Sridhar Ramesh, Carlsbad, CA (US);
Inventors:
James Qiu, Carlsbad, CA (US);
Sridhar Ramesh, Carlsbad, CA (US);
Assignee:
MaxLinear, Inc., Carlsbad, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G 3/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circuit for self-calibrating a gain control system samples the output of a digital amplifier coupled in series with one or more analog amplifiers to correct errors in a discrete stepped gain control. A digital gain control circuit controls both the digital amplifier and at least one analog amplifier to produce a smooth linear and continuous gain, wherein perturbations in the digital control of gain are smoothed by a signal applied to gain control circuit by a gain step correction circuit.