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:
Dec. 30, 1980
Filed:
Jun. 08, 1979
Applicant:
Inventors:
Robert L Forward, Oxnard, CA (US);
Dale M Sipma, Sherman Oaks, CA (US);
Assignee:
Hughes Aircraft Company, Culver City, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03H / ; H03H / ;
U.S. Cl.
CPC ...
333213 ; 307229 ;
Abstract
A two-terminal active network which simulates a low noise-temperature resistor is disclosed. In a preferred embodiment, a pair of operational amplifiers, each connected in the manner of a 'current pump,' comprises the active elements of the network. A resistive voltage divider network provides both positive and negative feedback to the operational amplifiers. Simulated resistors can be obtained with a wide range of equivalent resistance values and effective noise temperatures.