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:
Apr. 15, 2003
Filed:
Dec. 21, 2001
Applicant:
Inventor:
Harry J. McIntyre, Los Angeles, CA (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 ; H03F 3/16 ;
U.S. Cl.
CPC ...
H03F 3/45 ; H03F 3/16 ;
Abstract
A differential amplifier circuit connected to an impedance transport circuit is disclosed. The impedance transport circuit transports an AC input impedance to an output impedance and invert its polarity thereby enabling the common-mode gain of the differential amplifier to be varied. This impedance transport circuit utilizes two MOS transistors and an Op-Amp that causes the drain voltages of the transistors to be equal.