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:
Jan. 26, 2016
Filed:
May. 03, 2011
Applicants:
Yunzhi Dong, Toronto, CA;
Kenneth W. Martin, Toronto, CA;
Inventors:
Yunzhi Dong, Toronto, CA;
Kenneth W. Martin, Toronto, CA;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 10/06 (2006.01); H04B 10/69 (2013.01); H03F 3/08 (2006.01);
U.S. Cl.
CPC ...
H04B 10/693 (2013.01); H04B 10/695 (2013.01); H03F 3/08 (2013.01);
Abstract
An optical receiver including a photo detector for converting a light signal into an electrical current signal and a preamplifier circuit for receiving the electrical current signal and outputting a corresponding voltage signal. In one example, the preamplifier circuit includes a first transistor having: (i) a high impedance node connected to an input node connected to receive the electrical current signal from the photo detector, and (ii) a control terminal connected to receive active negative feedback proportional to the electrical current signal received at the input node.