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:
Feb. 04, 2003
Filed:
Jun. 13, 2001
Applicant:
Inventors:
Naishuo Cheng, Simi Valley, CA (US);
Kevin Choi, Thousand Oaks, CA (US);
Mark Bloom, Chandler, AZ (US);
Assignee:
Skyworks Solutions, Inc., Newport Beach, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 1/14 ;
U.S. Cl.
CPC ...
H03F 1/14 ;
Abstract
A high efficiency, multiple power output power amplifier uses a pair of amplifiers having similar characteristics coupled to a pair of radio frequency RF couplers. When both amplifiers are operating, the power output is the sum of the outputs of the two amplifiers. When lower power operation is desired, one of the amplifiers is turned off and a high impedance is presented to the isolated port of the output RF coupler, thereby ensuring that all of the power output of the remaining power amplifier is available for output.