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. 01, 1994
Filed:
Jun. 21, 1993
Jean Michel, Trappes, FR;
Thomson-LGT Laboratoire General des Telecommunications, Conflans Sainte Honorine, FR;
Abstract
The disclosure relates to the linear power amplification, in a single channel, of a composite signal formed by two independent signals. In a single channel formed by correction means followed by a linear preamplifier followed by a saturated amplifier, the filtering and symmetry effect produced, both in the correction means and in the saturated amplifier, is advantageously used to compensate for clipping of the composite signal due to the amplifier. This makes it possible to obtain an undistorted output signal whose amplitude exceeds the level of saturation of the saturated amplifier. The compensation makes it necessary for the transfer characteristic of the correction means to have a given slope between two points beyond which the saturation appears in the saturated amplifier and a slope that is substantially thrice the given slope on each side of these two points.