A low-voltage low-power wideband CMOS variable gain amplifier using active negative feedback

Sakphroml, Siraporn; Thanachayanont, Apinunt; Khumsat, Phanumas

doi:10.1109/ISPACS.2009.4806728

A low-voltage low-power wideband CMOS variable gain amplifier using active negative feedback

Author(s)

Sakphroml, Siraporn

Thanachayanont, Apinunt

Khumsat, Phanumas

Date Issued

January 1, 2009

Type

Conference Paper

DOI

10.1109/ISPACS.2009.4806728

Abstract

This paper describes the design and realization of a low-voltage low-power RF variable gain amplifier in a 0.18um CMOS technology. The proposed amplifier employs an active negative feedback technique to achieve wide bandwidth operation. Simulation results showed that the proposed circuit could achieve 1.78-GHz bandwidth with 13.04-dB gain under a single 1-V power supply voltage, while draining current less than 500 μA.

Citation

2008 International Symposium on Intelligent Signal Processing and Communication Systems Ispacs 2008, 2009