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:
Mar. 28, 2006
Filed:
Mar. 19, 2002
Ronald L. Porco, Fort Worth, TX (US);
William C. Greenwood, Trophy Club, TX (US);
Glen A. Franson, Fort Worth, TX (US);
Ronald L. Porco, Fort Worth, TX (US);
William C. Greenwood, Trophy Club, TX (US);
Glen A. Franson, Fort Worth, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An apparatus and method thereof for processing base band signals to reduce peak power requirements for a multi-channel transmitter is disclosed. The apparatus includes a first Fourier Transform Matrix (FTM) coupled to one or more input signals for providing a plurality of output signals; a processing unit for limiting a peak value for each of the output signals, and a second FTM for decomposing the peak limited output signals to provide one or more output base band signals, each of the output base band signals corresponding to one of the input signals. A multi-channel transmitter further converts the output base band signals to a radio frequency signals; a first analog FTM provides a plurality of amplifier input signals; a power amplifier having a plurality of amplifiers provides a plurality of amplified output signals; and a second analog FTM coupled to the amplified output signals provides transmit signals corresponding one to one with the output base band signals.