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:
Oct. 07, 1997
Filed:
Jul. 07, 1995
Christian Peyrotte, Toulouse, FR;
Paulo Baretto da Rocha, Toulouse, FR;
Jean-Luc Foucher, Seysses, FR;
Jean-Claude Azzara, Saint-Lys, FR;
Alcatel Espace, Nanterre Cedex, FR;
Abstract
A linearization circuit for a non-linear amplifier optimizes the overall efficiency (>50%). To achieve high efficiency the amplifier is operated in class 'E' or class 'F' and near saturation, causing phase and amplitude non-linearity. Phase non-linearity is corrected conventionally by a phase error signal generated in a feedback loop. Amplitude non-linearity is corrected by operating on the power supply modulator of the non-linear amplifier in an open loop configuration, using the input signal power. Further, more refined correction of amplitude non-linearity can be effected by operating on an automatic gain control amplifier on the input side of the non-linear amplifier, the gain of the automatic gain control amplifier being controlled by an amplitude error signal generated in a feedback loop.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile