A 7.9-mW 5.6-GHz digitally controlled variable gain amplifier with linearization
Kumar, Thangarasu Bharatha
Yeo, Kiat Seng
Date of Issue2012
School of Electrical and Electronic Engineering
This paper presents the design and validation of a compact high-performance digitally controlled variable-gain amplifier (DVGA). By using MOS switches and a linearizer, the designed DVGA demonstrates high linearity and gain flatness over a wide gain control range. The 6-bit DVGA is designed in a commercial 0.18-μm SiGe BiCMOS technology achieving a variable gain range from -16.5 to +6.5 dB, a 3-dB bandwidth from dc to 5.6 GHz, a ± 0.75-dB gain flatness from dc to 4 GHz, both input and output return loss greater than 15 dB, consuming 7.9 mW over the entire gain control range, and has a core circuit area of 170μm×60μm.
DRNTU::Engineering::Electrical and electronic engineering
IEEE transactions on microwave theory and techniques
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