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:
Jan. 29, 2002
Filed:
Jun. 27, 2000
Mehdy Abdollahian, Westford, MA (US);
Peter Bacon, Salem, NH (US);
Jean-Marc Mourant, Groton, MA (US);
Scott Munro, Wilmington, MA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A power amplification system and method for generating low power radio frequency signals. A coupler divides a received signal to be amplified into first and second components. First and second driver stages individually amplify the first and second components. During a low power operation the first and second components of the divided signal are combined in a coupler. In a high power operation, the first and second components are supplied to first and second output amplifiers. The output amplifiers are interconnected so that the amplified signals are combined in the second coupler. The output amplifiers may be output at peak efficiency, using a constant input signal level during the high power mode of operation. During the lower power operation, the driver stages produce the output signal levels.