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. 07, 2006
Filed:
Aug. 17, 2004
David Dening, Stokesdale, NC (US);
Ulrik R. Madsen, Herning, DK;
Victor E. Steel, Oak Ridge, NC (US);
Jon D. Jorgenson, Greensboro, NC (US);
Michael R. Kay, Summerfield, NC (US);
David Dening, Stokesdale, NC (US);
Ulrik R. Madsen, Herning, DK;
Victor E. Steel, Oak Ridge, NC (US);
Jon D. Jorgenson, Greensboro, NC (US);
Michael R. Kay, Summerfield, NC (US);
RF Micro Devices, Inc., Greensboro, NC (US);
Abstract
A system is provided for adjusting an output power of a multi-stage power amplifier by controlling a supply voltage provided to one or more output amplifier stages of the power amplifier using a switching DC—DC converter. In general, the system includes a power amplifier including an input amplifier stage and one or more output amplifier stages coupled in series with the input amplifier stage. The one or more output amplifier stages receive a variable supply voltage from switching DC—DC conversion circuitry. The switching DC—DC conversion circuitry provides the variable supply voltage based on an adjustable power control signal. By controlling the variable supply voltage provided to the one or more output stages, the switching DC—DC conversion circuitry controls an output power of the power amplifier based on the adjustable power control signal.