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:
Apr. 14, 2015
Filed:
Nov. 01, 2011
Applicant:
Dev V. Gupta, Concord, MA (US);
Inventor:
Dev V. Gupta, Concord, MA (US);
Assignee:
Newlans, Inc., Acton, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 1/08 (2006.01); H03F 3/21 (2006.01); H03F 1/32 (2006.01); H03F 3/195 (2006.01); H03F 3/24 (2006.01); H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
H03F 3/211 (2013.01); H03F 1/3229 (2013.01); H03F 3/195 (2013.01); H03F 3/245 (2013.01); H03F 3/45188 (2013.01); H03F 2200/405 (2013.01); H03F 2203/45644 (2013.01); H03F 2203/45684 (2013.01);
Abstract
In an embodiment, a circuit includes a variable group delay configured to delay a wideband input signal to obtain a delayed input signal; a wideband operational amplifier configured to determine an error signal based on a difference between the delayed input signal and a linearized power amplifier output; a feedback amplifier configured to amplify the error signal to obtain an amplified error signal; and a directional combiner configured to combine the amplified error signal with the power amplifier output to obtain the linearized power amplifier output.