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:
Jun. 08, 1993
Filed:
Feb. 14, 1992
Applicant:
Inventor:
Kenzo Ikuzawa, Kanagawa, JP;
Assignee:
Leader Electronics Corp., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330254 ; 330284 ; 330311 ; 330259 ;
Abstract
A variable gain amplifier is provided which includes a pair of common emitter circuits. A resistance between the collectors of a pair of transistors included within the common emitter circuits is reduced by a variable resistance used for DC level correction which is connected in parallel with a variable resistance used for gain adjustment which is connected between the collectors, thereby reducing the degree of correlation between the width of a variable range of gain and a bandwidth.