Title:
GAIN VARIABLE AMPLIFIER
Document Type and Number:
Japanese Patent JPH04259106
Kind Code:
A
Abstract:
PURPOSE: To reduce the degree of correlation between a gain variable range and a band width of a frequency characteristic in the gain variable amplifier.
CONSTITUTION: The degree of correlation between the gain variable range and the band width is reduced by connecting a variable resistor 20 for gain adjustment connected between the collectors with a variable resistor 30 for DC level correction to reduce a resistance between collectors of common emitter transistors(TRs) Q1, Q2 of the gain variable amplifier VGA.
Inventors:
UBUSAWA KENZO
Application Number:
JP2106691A
Publication Date:
September 14, 1992
Filing Date:
February 14, 1991
Export Citation:
Assignee:
LEADER ELECTRONICS
International Classes:
H03G1/00; H03G3/10; (IPC1-7): H03G3/10
Attorney, Agent or Firm:
Kyozo Yuasa (4 outside)