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:
Apr. 07, 2009
Filed:
May. 26, 2006
Jeong Ki Choi, Kyungki-do, KR;
Won Jin Baek, Kyungki-do, KR;
Hyun Hwan Yoo, Seoul, KR;
Seung Min OH, Kyungki-do, KR;
Jeong Ki Choi, Kyungki-do, KR;
Won Jin Baek, Kyungki-do, KR;
Hyun Hwan Yoo, Seoul, KR;
Seung Min Oh, Kyungki-do, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon, Kyungki-Do, KR;
Abstract
The present invention relates to an exponential function generator which is realized with only CMOS element without BJT element, not limited by the physical properties of the element or a square circuit, and not complicated in its configuration, and a variable gain amplifier using the same. The exponential function generator includes a voltage-current converter, 1to ncurve generators for mirroring the current from the voltage-current converter, outputting a current adjusted according to a predetermined ratio, and an output end for outputting the sum of the current from the 1to ncurve generators. The exponential current generator is configured to generate the current exponentially adjusted according to the control voltage.