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:
May. 14, 2002
Filed:
Jan. 12, 2001
Applicant:
Inventors:
Hideo Morohashi, Kanagawa, JP;
Shinichi Tanabe, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/04 ; H03G 3/10 ;
U.S. Cl.
CPC ...
H03F 3/04 ; H03G 3/10 ;
Abstract
A grounded emitter amplifier and a radio communication device using the same in which a bias voltage is generated in order to adjust an emitter current of a transistor in a grounded emitter amplification circuit so that the emitter current does not receive an influence of variations in several parameters of the transistor such as a current amplification factor hfe.