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. 17, 2009
Filed:
Sep. 30, 2008
Applicants:
Gregory J. Bowles, Nepean, CA;
Widdowson Scott, Ottawa, CA;
Graham Dolman, Saffron Walden, GB;
Inventors:
Assignee:
Nortel Networks Limited, St. Laurent, Quebec, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/68 (2006.01);
U.S. Cl.
CPC ...
Abstract
An enhanced Doherty-configured amplifier that features separate and independent bias voltage sources for the main and auxiliary amplifiers. The bias voltage sources may be controllable and variable to alter the performance of the amplifier according to the input signal or system requirements. The enhanced amplifier includes a signal preparation unit to divide and shape the input signal in order to compensate for non-linearities in the combined output signal.