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. 08, 1994
Filed:
Apr. 27, 1993
Henry A Blauvelt, San Marino, CA (US);
Ortel Corporation, Alhambra, CA (US);
Abstract
An electronic circuit provides a linear output from an amplifying device, such as a hybrid push-pull amplifier, which has inherent distortion. In a preferred embodiment, the distortion of the hybrid amplifier is compensated by nesting a pair of hybrid push-pull amplifiers within a push-pull circuit configuration. In another embodiment, the distortion of the hybrid amplifier is compensated by providing a predistorted signal equal in magnitude, but opposite in sign, to the distortion introduced by the nonlinear device. The input signal is split into two electrical paths with the primary part of the signal applied directly to the hybrid amplifier, with a time delay to compensate for delay in the secondary path. Elements within the secondary path generate both even and odd order distortion products. These are recombined with the primary signal in proper phase and amplitude, and the resulting signal is applied to the hybrid amplifier for canceling distortion in the hybrid amplifier.