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:
Feb. 02, 1988
Filed:
Apr. 24, 1986
Georges Folcke, Paris, FR;
Rose Cordier, Conflans Sainte Honorine, FR;
Jean-Claude Angremy, Andresy, FR;
Alcatel, Paris, FR;
Abstract
An optical signal receiver for operating over a very wide frequency passband having 3dB points at a few kHz and at 1 GHz or beyond, comprises an input stage (Q1, Q2), an amplifier (Q3 to Q6), an output stage (Q7), and a negative feedback resistance (R26) of one to several kilohms. In order to obtain high amplifier gain, the load resistance (R8) of the input stage is increased to the point where it sets up, together with the input capacitance, a lowpass filter pole within the receiver passband, said pole being compensated immediately thereafter by a link (10, C6) between the first and second stages (Q3 and Q4) of said amplifier.