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:
Jul. 31, 2007
Filed:
Jun. 28, 2005
Raul Salvi, Boca Raton, FL (US);
Raul Salvi, Boca Raton, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A linear power efficient radio frequency (RF) driver system () includes a pre-driver amplifier () for amplifying an RF signal; and an output driver () having a substantially high impedance input for amplifying the signal from the pre-driver amplifier (). A bias controller () is used for controlling the RF power output of the output driver () where the current drain of the pre-driver amplifier () and the bias controller () are controlled to a minimum level while maintaining linearity of the output driver (). The system and method of the invention work to provide minimal current drain in portable products using simultaneous current and power amplifier reduction based on driver input swing to lower signal distortion.