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. 24, 2009
Filed:
Aug. 29, 2007
Applicants:
Jurgen Hissen, Port Moody, CA;
Matthew W. Mcadam, Vancouver, CA;
Inventors:
Jurgen Hissen, Port Moody, CA;
Matthew W. McAdam, Vancouver, CA;
Assignee:
PMC-Sierra, Inc., Santa Clara, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03G 3/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus for linearizing the gain of a common-source field effect transistor (FET) amplifier. The method involves connecting a capacitive load in parallel with the gate of the FET through a switch, and opening and closing this switch depending on the voltage on the gate of the FET. The result is a FET amplifier circuit that has a substantially linear transcapacitance characteristic, making it a useful circuit for low-distortion high-power amplifiers such as xDSL line drivers.