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:
Aug. 15, 2006
Filed:
Jun. 25, 2004
Mark Doherty, Westford, MA (US);
Anthony Quaglietta, North Andover, MA (US);
Jose Harrison, North Andover, MA (US);
Mark Doherty, Westford, MA (US);
Anthony Quaglietta, North Andover, MA (US);
Jose Harrison, North Andover, MA (US);
SiGe Semiconductor (U.S.), Corp., Methuen, MA (US);
Abstract
A novel method and apparatus is disclosed for reducing power dissipation of RF power amplifiers when a reduced output power level is required. The mechanism has the specific purpose of optimizing the collector terminal voltage on portions of the amplifier's RF chain for maintaining linearity while minimizing power consumption. The apparatus permits a smaller DC to DC converter to be used than in prior art, such that it is implemented in the same semiconductor die or module. Furthermore, the invention eliminates the amplification and phase continuity issues that arise from switched state power amplifiers and envelope-following approaches.