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:
Aug. 14, 2012
Filed:
Jul. 22, 2010
Didier Belot, Rives, FR;
Laurent Leyssenne, Talence, FR;
Eric Kerherve, Talence Cedex, FR;
Yann Deval, Bordeaux, FR;
Didier Belot, Rives, FR;
Laurent Leyssenne, Talence, FR;
Eric Kerherve, Talence Cedex, FR;
Yann Deval, Bordeaux, FR;
STMicroelectronics SA, Montrouge, FR;
Abstract
A radiofrequency signal power amplification circuit may include a signal input for receiving the radiofrequency signal, an amplification stage coupled to the signal input and having at least one power transistor, a biasing stage for delivering a bias voltage to the amplification stage, and a processing stage. The processing stage may include a processing input coupled to the signal input, a processing output for delivering a bias current modulated at least in amplitude to the biasing stage, and an amplitude modulator coupled between the processing input and the processing output and configured to determine an envelope signal representative of the envelope of the radiofrequency signal, for modulating the amplitude of the envelope signal based on a variable voltage setpoint and for generating the amplitude-modulated bias current based on the modulated envelope signal.