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. 26, 2006
Filed:
May. 10, 2001
Jesus Guinea, Brembate, IT;
Luciano Tomasini, Monza, IT;
Carlo Maria Milanese, Olevano di Lomellina, IT;
Jesus Guinea, Brembate, IT;
Luciano Tomasini, Monza, IT;
Carlo Maria Milanese, Olevano di Lomellina, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
A method and an equalizer circuit equalize signals transmitted on a line having an attenuation. The equalizer circuit includes: an analogical adaptive filter applied in series with the line and includes plural transconductance filters each having a bias current. The adaptive filter has a pole and a zero each having a frequency position in the working band that is variable in response to the bias current. The equalizer circuit includes a retroaction circuit applied to the output of the filter and able to vary the bias current according to the varying of the attenuation of the line. The bias current of the transconductance filters has a prefixed value and is made to vary at the increasing of the attenuation so that the pole is moved toward high frequencies and the zero is moved toward low frequencies.