A low-power-consumption linear-in-dB CMOS VGA

Ya Fen Ge; Kui Zhang; Si Heng Zhu; Sheng Xu Wang; Yong Liu; Li Ming Si; Xin Lv

doi:10.1109/ICMTCE.2013.6812433

A low-power-consumption linear-in-dB CMOS VGA

Ya Fen Ge, Kui Zhang, Si Heng Zhu, Sheng Xu Wang, Yong Liu, Li Ming Si, Xin Lv

School of Integrated Circuits and Electronics

Beijing Institute of Technology

Research output: Contribution to conference › Paper › peer-review

1 Citation (Scopus)

Abstract

This paper presents a low-power and small-size variable gain amplifier (VGA) which consumes only 1.1mW and occupies only 132um × 59um in 0.18-um CMOS technology. The proposed circuit is implemented by Gilbert cells and an exponential function circuit for the dB linearity of the gain voltage. The gain of the VGA can be varied linearly in dB from -10dB to 50dB with respect to a control voltage from 0.2V to 0.85V. The operation frequency is only 10MHz, but the VGA maintains 3dB-bandwidth wider than 46MHz throughout its gain range. At the worst case, the amplitude of the output can be 300mV when THD is lower than -40dBc. The total simulation is based on TSMC 0.18um. Low power consumption is obtained owing to high transition frequency of the transistors in 0.18-um CMOS technology.

Original language	English
Pages	274-276
Number of pages	3
DOIs	https://doi.org/10.1109/ICMTCE.2013.6812433
Publication status	Published - 2013
Event	2013 3rd IEEE International Conference on Microwave Technology and Computational Electromagnetics, ICMTCE 2013 - Qingdao, China Duration: 27 Aug 2013 → 29 Aug 2013

Conference

Conference	2013 3rd IEEE International Conference on Microwave Technology and Computational Electromagnetics, ICMTCE 2013
Country/Territory	China
City	Qingdao
Period	27/08/13 → 29/08/13

Keywords

lower-power
small-area
variable gain amplifier

Access to Document

10.1109/ICMTCE.2013.6812433

Cite this

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abstract = "This paper presents a low-power and small-size variable gain amplifier (VGA) which consumes only 1.1mW and occupies only 132um × 59um in 0.18-um CMOS technology. The proposed circuit is implemented by Gilbert cells and an exponential function circuit for the dB linearity of the gain voltage. The gain of the VGA can be varied linearly in dB from -10dB to 50dB with respect to a control voltage from 0.2V to 0.85V. The operation frequency is only 10MHz, but the VGA maintains 3dB-bandwidth wider than 46MHz throughout its gain range. At the worst case, the amplitude of the output can be 300mV when THD is lower than -40dBc. The total simulation is based on TSMC 0.18um. Low power consumption is obtained owing to high transition frequency of the transistors in 0.18-um CMOS technology.",

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doi = "10.1109/ICMTCE.2013.6812433",

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T1 - A low-power-consumption linear-in-dB CMOS VGA

AU - Ge, Ya Fen

AU - Zhang, Kui

AU - Zhu, Si Heng

AU - Wang, Sheng Xu

AU - Liu, Yong

AU - Si, Li Ming

AU - Lv, Xin

PY - 2013

Y1 - 2013

N2 - This paper presents a low-power and small-size variable gain amplifier (VGA) which consumes only 1.1mW and occupies only 132um × 59um in 0.18-um CMOS technology. The proposed circuit is implemented by Gilbert cells and an exponential function circuit for the dB linearity of the gain voltage. The gain of the VGA can be varied linearly in dB from -10dB to 50dB with respect to a control voltage from 0.2V to 0.85V. The operation frequency is only 10MHz, but the VGA maintains 3dB-bandwidth wider than 46MHz throughout its gain range. At the worst case, the amplitude of the output can be 300mV when THD is lower than -40dBc. The total simulation is based on TSMC 0.18um. Low power consumption is obtained owing to high transition frequency of the transistors in 0.18-um CMOS technology.

AB - This paper presents a low-power and small-size variable gain amplifier (VGA) which consumes only 1.1mW and occupies only 132um × 59um in 0.18-um CMOS technology. The proposed circuit is implemented by Gilbert cells and an exponential function circuit for the dB linearity of the gain voltage. The gain of the VGA can be varied linearly in dB from -10dB to 50dB with respect to a control voltage from 0.2V to 0.85V. The operation frequency is only 10MHz, but the VGA maintains 3dB-bandwidth wider than 46MHz throughout its gain range. At the worst case, the amplitude of the output can be 300mV when THD is lower than -40dBc. The total simulation is based on TSMC 0.18um. Low power consumption is obtained owing to high transition frequency of the transistors in 0.18-um CMOS technology.

KW - lower-power

KW - small-area

KW - variable gain amplifier

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Y2 - 27 August 2013 through 29 August 2013

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A low-power-consumption linear-in-dB CMOS VGA

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Keywords

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