2009•Unpublished venueRequires access
A low-voltage low-power wideband CMOS variable gain amplifier using active negative feedback
Siraporn Sakphrom, Apinunt Thanachayanont, Phanumas Khumsat
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Abstract
This paper describes the design and realization of a low-voltage low-power RF variable gain amplifier in a 0.18 um 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 muA.