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. 24, 2001
Filed:
Jul. 16, 1999
Applicant:
Inventors:
Kim Anh Tran, Garland, TX (US);
Chia-sam Wey, Arlington, TX (US);
Jukka-Pekka Neitiniemi, Irving, TX (US);
Assignee:
Nokia Telecommunications OY, Espoo, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 7/556 ;
U.S. Cl.
CPC ...
G06F 7/556 ;
Abstract
A precision-controlled logarithmic amplifier having reduced interference parameters. In an embodiment, the invention comprises a logarithmic amplifier having an output signal providing a logarithmic representation of an input signal. A precision-control circuit is coupled to the logarithmic amplifier. The precision-control circuit produces a bias and a saturation current that act to reduce the effects of bias and saturation currents that are produced in the logarithmic amplifier and affect the output signal of the logarithmic amplifier.