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:
Nov. 30, 1999
Filed:
Feb. 24, 1997
Applicant:
Inventors:
Takahisa Kawai, Kawasaki, JP;
Itsuo Okamoto, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, US;
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330277 ; 330296 ; 330310 ;
Abstract
An amplifier circuit includes a first FET of an enhancement type having a gate supplied with an input signal and a gate bias voltage and a drain via which an amplified output signal is output, and a second FET of the enhancement type having a drain connected to a drain voltage source, a source connected to the drain of the first FET, and a gate supplied with a control signal for controlling the drain voltage supplied to the first FET.