| Autor: |
Hu Yong, Li Tianzhu, Wang Chengbi, Sun Zhenya, Wen Luo, Ning Ning, Qi Yu |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC). |
| DOI: |
10.1109/mec.2011.6025969 |
| Popis: |
A CMOS dB-linear Variable Gain Amplifier (VGA) using Curvematching is presented. The CMOS dB-linear VGA provides a variable gain of 59dB while maintaining −3dB bandwidth greater than 86MHz. Curvematching is proposed to obtain the dB-linear gain control characteristics based on a low-distortion source-degenerated differential amplifier structure. Nonideal effects on dB linearity are analyzed and the methods for improvement are suggested. The VGA is designed in a 0.13μm CMOS technology and the post-simulation results demonstrate the good dB linearity, good property of total harmonic distortion and noise figure. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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