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. 04, 2006
Filed:
Sep. 21, 2004
Michael R. Vagher, Vinton, IA (US);
Clayton Harmon, Cedar Rapids, IA (US);
Andrew J. Wiebold, Marion, IA (US);
Michael R. Vagher, Vinton, IA (US);
Clayton Harmon, Cedar Rapids, IA (US);
Andrew J. Wiebold, Marion, IA (US);
Rockwell Collins, Inc., Cedar Rapids, IA (US);
Abstract
A digital power amplifier with variable output power control is disclosed. An amplifying stage includes a first attenuator that applies one of n attenuation steps to an RF signal in response to a desired output power level of the digital power amplifier. A feedback loop provides a gain control signal to the amplifying stage based upon an output of the amplifying stage. The feedback loop includes a second attenuator that applies another of the n attenuation steps to a sample of the output of the amplifying stage. The second attenuator applies the khighest of the n attenuation steps when the first attenuator applies the klowest of the n attenuation steps, where 1≦k≦n.