A novel method to design variable gain amplifier

Design of a wideband variable gain amplifier

Design of Variable Gain Amplifier in CMOS Technology

2015 i ACKNOWLEDGEMENTS I am deeply grateful to my supervisor, Associate Professor Boon Chirn Chye for giving me the opportunity to work in this project under his guidance. I also would like to thank him, as well as Nanyang Technological University, for academic and financial support throughout the whole course of this work. My gratitude is extended to my wife, Wang Xiaolei and my parents for t...

Analysis and Design of Finfet Based Variable Gain Amplifier

Comparison of analog figures-of-merit of FinFETs and MOSFETs reveals an interesting tradeoff in the analog/RF design space. It is found that FinFETs possess the following key advantages over MOSFETs: reduced power dissipation, and better voltage gain without degradation of noise or linearity. This makes them attractive for low-frequency RF applications around 5 GHz, where the performance-power ...

A Highly Linear Cmos Amplifier for Variable Gain Amplifier Applications

This paper reports the design of a highly-linear CMOS amplifier for Variable Gain Amplifier (VGA) applications. A better than –60dB 3rd harmonic distortion at differential output level of 1V peak-to-peak is obtained by utilizing a linearization scheme that does not rely on the active devices. The amplifier maintains 3dB bandwidth over 300MHz. A noise figure at 8.6dB is obtained with source impe...

A CMOS IF Variable Gain Amplifier with Exponential Gain Control

An intermediate frequency (IF) variable gain amplifier (VGA) with exponential gain control for a radio receiver is fabricated in 0.25-μm CMOS technology. The techniques to improve the bandwidth and to reduce temperature dependence of gain are described. The complete VGA is composed of two stages of linearized transconductance VGA and three stages of fixed gain amplifier (FGA). The complete VGA ...