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. 26, 2019
Filed:
Sep. 13, 2016
Applicant:
Firecomms Limited, Cork, IE;
Inventors:
Assignee:
Firecomms Limited, Cork, IE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/38 (2015.01); H03F 3/345 (2006.01); H03F 1/22 (2006.01); H03F 1/32 (2006.01); H03F 3/08 (2006.01); H03F 3/50 (2006.01);
U.S. Cl.
CPC ...
H03F 3/345 (2013.01); H03F 1/223 (2013.01); H03F 1/3205 (2013.01); H03F 3/082 (2013.01); H03F 3/505 (2013.01); H03F 2200/456 (2013.01); H03F 2203/5031 (2013.01);
Abstract
A transconductance circuit has an input terminal (V) and an output terminal (Out), a first current source () having a gate connected to said input terminal (V); and a second current source (), in parallel with said first current source, and having a higher transconductance and a wider dynamic range than the first current source. The current sources are configured so that at a low input voltage only the first current source () is on. A voltage drop circuit provides a lower bias voltage for the second current source than for the first current source.