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. 26, 2002
Filed:
Dec. 27, 2000
Applicant:
Inventors:
Ronald Gene Myers, Scottsdale, AZ (US);
Bernard Eugene Sigmon, Gilbert, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/38 ;
U.S. Cl.
CPC ...
H03F 3/38 ;
Abstract
A method and apparatus for efficient power amplification of a wideband signal with a correspondingly wide modulation bandwidth includes splitting means ( ), class-G amplifier/modulator ( ), and power amplifier ( ). Three-level class-G amplifier/modulator ( , FIG. ) comprises operational amplifier circuits ( ), three-state selection circuit ( ), switch driver circuit ( ), drive signal routing circuit ( ), power stage circuit ( ), and filter network ( ). Multiple power stages are multiplexed based on the amplitude of the envelope signal.