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. 12, 2003
Filed:
Feb. 08, 2002
Charles C. Hanson, Kenyon, MN (US);
Curtis Walter Preuss, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A differential receiver-amplifier having reduced input distortion at differential input (positive and negative) terminals to the differential receiver-amplifier. The output from the differential receiver-amplifier is generated from a differential signal detector receiving each differential input from one of a pair of differential amplifiers. While each of the differential amplifiers have two differential input terminals of substantially different input impedances, the first differential input terminal of the first differential amplifier and the second differential input terminal of the second differential amplifier are coupled to the differential positive terminal, and the second differential input terminal of the first differential amplifier and the first differential input terminal of the second differential amplifier are coupled to the differential negative terminal, wherein the resulting input impedance at the differential positive terminal is substantially equal to the resulting input impedance at the differential negative terminal.