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:
Mar. 10, 2009
Filed:
Dec. 01, 2004
Applicant:
Hiroshi Kimura, Hyogo, JP;
Inventor:
Hiroshi Kimura, Hyogo, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical receiver preamplifier includes an inverting amplifierand a current-voltage conversion elementconnected between input and output terminals of the inverting amplifier. The inverting amplifierincludes a first transistorhaving a gate connected to the input terminal In of the inverting amplifier, a second transistorhaving a source connected to a drain of the first transistorand a gate to which a predetermined voltage Vb is applied, and a loadconnected to a drain of the second transistor. A third transistoris connected between the input terminal In of the inverting amplifierand a source of the second transistor