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. 22, 2026
Filed:
Jul. 21, 2023
Applicant:
Nokia Solutions and Networks Oy, Espoo, FI;
Inventors:
Lorenzo Iotti, Brooklyn, NY (US);
Mark Ferriss, Tarrytown, NY (US);
Alexander Rylyakov, Staten Island, NY (US);
Assignee:
Nokia Solutions and Networks Oy, Espoo, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01); H03G 3/30 (2006.01);
U.S. Cl.
CPC ...
H03G 3/30 (2013.01); H03F 3/45197 (2013.01); H03G 2201/103 (2013.01);
Abstract
An apparatus, e.g., an optical signal receiver, includes a trans-impedance amplifier (TIA) circuit. The TIA circuit includes a variable gain amplifier (VGA) having a tunable tail current source. The TIA circuit is configured to tune the tail current source to stabilize a DC current to a load resistor of the VGA over an operating gain range of the TIA circuit.