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:
Mar. 26, 1985
Filed:
Feb. 13, 1981
Stephen C Kwan, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An analog circuit for implementing nonlinear operators such as an Nth-root extractor or an Nth-power operator. Two input currents yield one output current having the relationship I.sub.1 =I.sub.k.sup.-n I.sub.2.sup.n+2, where n is a positive integer and I.sub.k is a gain setting current. When n=1 the circuit functions as a square root extractor or a squaring converter. The present circuit is readily implemented with bipolar technology and offers high speed performance and temperature stability without external compensation. Typical applications of the present circuit include RMS measurement, auto-correlation, power measurement and gain compression/expansion.