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. 13, 2005
Filed:
Apr. 17, 2002
Applicants:
Bruno Pellat, Laval, FR;
Jean-charles Grasset, Moirans, FR;
Inventors:
Bruno Pellat, Laval, FR;
Jean-Charles Grasset, Moirans, FR;
Assignee:
STMicroelectronics SA, Montrouge, FR;
Primary Examiner:
Int. Cl.
CPC ...
H04B001/28 ;
U.S. Cl.
CPC ...
Abstract
A transconductance stage includes at least one principal bipolar transistor having a base linked to an input terminal, a collector linked to an output terminal, and an emitter linked to a supply terminal through a resistor. At least one bipolar compensation transistor is connected in parallel to the principal transistor and linked without going through the resistor to the supply terminal. The value Rof the resistance is chosen so that R*I>V/2, where Vis the thermal voltage and Iis the quiescent current of the principal transistor.