A Novel Circuit Design of the Wideband VGA in CMOS

Yu Yang Liu

doi:10.4028/www.scientific.net/AMR.1049-1050.682

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1049-1050A Novel Circuit Design of the Wideband VGA in CMOS

A Novel Circuit Design of the Wideband VGA in CMOS

Abstract:

In this paper, a wideband variable-gain amplifier (VGA) in CMOS for ultra wideband (UWB) system is designed. The operation frequency of the VGA is 4.2-4.8GHz, and the gain is continuously adjustable between 0 and 30dB. Cascaded Cherry-Hooper with two stages is adopted as the core unit of the VGA, and a temperature compensation circuit is used to reduce the effect of temperature on the performance of the system. The simulation shows that the temperature compensation circuit can compensate the effect of the temperature very well, and the noise figure of the wideband VGA can meet the requirements of the system.

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Periodical:

Advanced Materials Research (Volumes 1049-1050)

Pages:

682-686

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1049-1050.682

Citation:

Cite this paper

Online since:

October 2014

Authors:

Yu Yang Liu*

Keywords:

Core Unit, Temperature Compensation, Wideband VGA

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* - Corresponding Author

References

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