A broadband high linearity inductorless CMOS variable gain amplifier for square kilometer array

I. L. Abdalla; A. Allam; H. Jia; R. Pokharel

doi:10.1109/SMACD.2015.7301683

A broadband high linearity inductorless CMOS variable gain amplifier for square kilometer array

I. L. Abdalla, A. Allam, H. Jia, R. Pokharel

Department of I&E Visionaries

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper presents a high-bandwidth 2 GHz CMOS variable gain amplifier (VGA) for using in the band of square kilometer array (SKA) range that achieves an 18 dB dynamic range (DR) while powered from a single 1.8 V supply. This VGA capability is obtained by employing a passive digital T-bridge attenuator followed by a fixed amplifier, the use of attenuator in the front end of the VGA results in a high linearity of 28 dBm to 34 dBm over the full DR. In contrast to traditional VGAs [5], [6], the VGA exhibits 30-50 dB more in DR while its bandwidth and IP3 extends below the presented.

Original language	English
Title of host publication	2015 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781467391849
DOIs	https://doi.org/10.1109/SMACD.2015.7301683
Publication status	Published - Oct 19 2015
Event	International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015 - Istanbul, Turkey Duration: Sep 7 2015 → Sep 9 2015

Publication series

Name	2015 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015

Other

Other	International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015
Country/Territory	Turkey
City	Istanbul
Period	9/7/15 → 9/9/15

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering
Modelling and Simulation

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10.1109/SMACD.2015.7301683

Cite this

Abdalla, I. L., Allam, A., Jia, H., & Pokharel, R. (2015). A broadband high linearity inductorless CMOS variable gain amplifier for square kilometer array. In 2015 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015 [7301683] (2015 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SMACD.2015.7301683

A broadband high linearity inductorless CMOS variable gain amplifier for square kilometer array. / Abdalla, I. L.; Allam, A.; Jia, H.; Pokharel, R.

2015 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7301683 (2015 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abdalla, IL, Allam, A, Jia, H & Pokharel, R 2015, A broadband high linearity inductorless CMOS variable gain amplifier for square kilometer array. in 2015 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015., 7301683, 2015 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015, Institute of Electrical and Electronics Engineers Inc., International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015, Istanbul, Turkey, 9/7/15. https://doi.org/10.1109/SMACD.2015.7301683

Abdalla IL, Allam A, Jia H, Pokharel R. A broadband high linearity inductorless CMOS variable gain amplifier for square kilometer array. In 2015 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015. Institute of Electrical and Electronics Engineers Inc. 2015. 7301683. (2015 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015). https://doi.org/10.1109/SMACD.2015.7301683

Abdalla, I. L. ; Allam, A. ; Jia, H. ; Pokharel, R. / A broadband high linearity inductorless CMOS variable gain amplifier for square kilometer array. 2015 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015. Institute of Electrical and Electronics Engineers Inc., 2015. (2015 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2015).

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AB - This paper presents a high-bandwidth 2 GHz CMOS variable gain amplifier (VGA) for using in the band of square kilometer array (SKA) range that achieves an 18 dB dynamic range (DR) while powered from a single 1.8 V supply. This VGA capability is obtained by employing a passive digital T-bridge attenuator followed by a fixed amplifier, the use of attenuator in the front end of the VGA results in a high linearity of 28 dBm to 34 dBm over the full DR. In contrast to traditional VGAs [5], [6], the VGA exhibits 30-50 dB more in DR while its bandwidth and IP3 extends below the presented.

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A broadband high linearity inductorless CMOS variable gain amplifier for square kilometer array

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