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:
Jul. 01, 2008
Filed:
Jan. 06, 2006
Ernesto Jeckeln, Richardson, TX (US);
Breck W. Lovinggood, Garland, TX (US);
Michael L. Brobston, Allen, TX (US);
Ernesto Jeckeln, Richardson, TX (US);
Breck W. Lovinggood, Garland, TX (US);
Michael L. Brobston, Allen, TX (US);
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A Class S RF power amplifier for use in a radio frequency (RF) transmitter. The Class S power amplifier comprises a delta-sigma modulator that receives an analog modulated RF carrier and generates a pulse-width modulated binary signal. The Class S power amplifier also comprises a switch mode power amplifier that receives the pulse-width modulated binary signal generated by the delta-sigma modulator and generates an output carrier signal that switches between a fully on state and a fully off state. The sampling rate of the delta-sigma modulator is less than four times the frequency of the output carrier signal generated by the switch mode power amplifier.