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Title: Variable gain amplifier
Authors: Hoo, Swee Chuen.
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Electronic circuits
Issue Date: 2005
Abstract: A detailed study of various variable gain topologies is presented in this report. A Variable Gain Amplifier (VGA) with an exponential gain control characteristic is desired in Automatic Gain Control (AGC) application. Thus, a metal-oxidesemiconductor (MOS) variable gain amplifier with linear in dB characteristic was designed. The voltage gain or transconductor of the VGA can be varying by a control voltage. This amplifier, based on complementary MOS (CMOS) transistors operating in strong inversion, is composed of exponential voltage generator block, four quadrant analog multiplier and tranresistance output stage.
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:EEE Theses

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