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:
Sep. 19, 2006
Filed:
Feb. 03, 2005
Eoin Ohannaidh, Brignoud, FR;
Eoin Ohannaidh, Brignoud, FR;
STMicroelectronics S.A., Montrouge, FR;
Abstract
A biquad notch filter includes a first stage having first and second admittances of a first type connected between an input terminal and the control terminal of a transistor, a first current source connected between a first supply terminal and a first terminal of the transistor, a second current source connected between a second terminal of the transistor and a second supply terminal; a third admittance of a second type connected between the control terminal and the second supply terminal, a fourth admittance of a second type connected between the first admittance and the second terminal; and a second stage having a transconductance, including a fifth admittance of the first type, connected between the control terminal and an output terminal, a sixth admittance of the first type connected between the output terminal and the second supply terminal, and a connection of the first terminal to the output terminal.