Design & Fabrication of a Broadband SiGe HBT Variable Gain Amplifier using a Feedforward Configuration 


Vol. 32,  No. 5, pp. 497-502, May  2007


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  Abstract

Broadband monolithic SiGe HBT variable gain amplifier with a feedforward configuration have been newly developed to improve bandwidth and dB-linearly controlled gain characteristics. The VGA has been implemented in a 0.35-㎛ BiCMOS process. The VGA achieves a dynamic gain-control range of 19.6 ㏈ and a 3-㏈ bandwidth of 4 ㎓ (4 ~ 8 ㎓) with the control-voltage range from 0.6 to 2.6 V. The VGA produces a maximum gain of 9.3 ㏈ at 6 ㎓ and a output power of -3 ㏈m at 8 ㎓.

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  Cite this article

[IEEE Style]

K. Chae and C. Kim, "Design & Fabrication of a Broadband SiGe HBT Variable Gain Amplifier using a Feedforward Configuration," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 5, pp. 497-502, 2007. DOI: .

[ACM Style]

Kyu-Sung Chae and Chang-Woo Kim. 2007. Design & Fabrication of a Broadband SiGe HBT Variable Gain Amplifier using a Feedforward Configuration. The Journal of Korean Institute of Communications and Information Sciences, 32, 5, (2007), 497-502. DOI: .

[KICS Style]

Kyu-Sung Chae and Chang-Woo Kim, "Design & Fabrication of a Broadband SiGe HBT Variable Gain Amplifier using a Feedforward Configuration," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 5, pp. 497-502, 5. 2007.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880