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Title: A DC to 4 GHz fully differential wideband digitally controlled variable gain amplifier
Authors: Kumar, Thangarasu Bharatha
Ma, Kaixue
Yeo, Kiat Seng
Mou, Shouxian
Mahalingam, Nagarajan
Gu, Jiang Min
Lim, Kok Meng
Yang, Lu
Yu, Hao
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2010
Source: Kumar, T. B., Ma, K., Yeo, K. S., Mou, S., Mahalingam, N., Gu, J. M., et al. (2010). A DC to 4 GHz fully differential wideband digitally controlled variable gain amplifier. 2010 Asia-Pacific Microwave Conference Proceedings (APMC), 2295 - 2298.
Abstract: A Variable Gain and Attenuation control Amplifier (VGA) operating with low power, wide bandwidth and large Gain range for interfacing 60GHz RF front-end to Digital Baseband processor has been designed in 180nm SiGe BiCMOS technology from Jazz Semiconductor. The VGA is implemented using two stage amplifier followed by a Buffer stage with additional Diode linearizer for improving the input referred 1dB compression point. The performance parameters of the proposed VGA is been simulated and achieves a Gain range of -10dB to +10dB with 3-dB Bandwidth of greater than 4GHz. This VGA topology has good input and output matching. The complete circuit consumes about 9mW power from a DC 1.8V supply and the Core circuit (excluding I/O Pads) occupies a chip area of 170μm x 60μm.
Rights: © 2010 IEICE.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Conference Papers

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