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:
Jul. 24, 1984
Filed:
Jan. 10, 1983
Applicant:
Inventor:
Hajime Takamatsu, Tokyo, JP;
Assignee:
Sony/Tektronix, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03G / ;
U.S. Cl.
CPC ...
330254 ; 330144 ; 330284 ; 330295 ;
Abstract
A variable gain amplifier including common emitter input transistor, a plurality of common base switching transistor to form a cascode amplifier with said input transistor and a resistive network including a plurality of series resistors is disclosed. A plurality of predetermined gains are obtained by programming the resistors. The resistive network may be shared by two or more variable gain amplifiers to provide a selection amplifier.