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:
Nov. 03, 2015
Filed:
Apr. 02, 2014
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Munir A. Al-Absi, Dhahran, SA;
Karama M. Al-Tamimi, Dhahran, SA;
KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran, SA;
Abstract
The high dynamic range exponential current generator produces an output waveform (current/voltage) which is an exponential function of the input waveform (current/voltage). The exponential characteristics are obtained in BiCMOS or Bipolar technologies using the intrinsic characteristics (I/V) of the bipolar transistors. The high dynamic range exponential current generator is biased in weak inversion region. MOSFETs biased in weak inversion region are used not to utilize the inherent exponential (I/V) relationship but to simply implement xand xterms using translinear loops. The term xis realized by two cascaded squaring units. The approximation equation used is