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:
Jul. 13, 1982
Filed:
Dec. 21, 1979
Applicant:
Inventor:
Werner H Hoeft, Saratoga, CA (US);
Assignee:
Signetics Corporation, Sunnyvale, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03H / ;
U.S. Cl.
CPC ...
307564 ; 307562 ; 307264 ; 307547 ;
Abstract
A variable impedance circuit in which nonlinearities caused by the application of a signal are substantially reduced by the use of a feedback circuit for cancelling out the added input current due to the application of the input signal. By using a feedback circuit to obtain the desired improvement in linearity, the gain of the feedback loop can be tailored to obtain the necessary impedance range and output swing in a circuit capable of operating at relatively low power supply voltages.