| 基于线性频率调制与解调的片上直流电压信号放大器 |
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| 引用本文： | 马 卓,潘国腾,郭 阳,谢伦国.基于线性频率调制与解调的片上直流电压信号放大器[J].国防科技大学学报,2012,34(3):136-141. |
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| 作者姓名： | 马 卓 潘国腾 郭 阳 谢伦国 |
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| 作者单位： | 国防科技大学计算机学院,湖南长沙,410073 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 片内直流电压信号摆幅较小,且受到CMOS工艺中被动器件一致性较差、易被高频交流信号干扰等因素的影响,采用典型的比例放大电路难以放大这类信号.为此提出了一种基于“载频”的“电压→频率→电压”放大方法,使用载波信号作为片上长距离传输的信号,将易受到干扰的直流信号局部化,利用前馈补偿技术构建了具有高度线性转换关系的“电压→频率”调制电路,采用具有较高线性度的频率解调电路实现后级电压信号的解调,有效地放大片内直流电压信号.电路仿真结果表明,所提出的放大器电路能有效地放大片上电压信号,直流电压增益为2.4.
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| 关 键 词： | 片内直流电压信号 放大器 线性 频率调制 解调 |
An on-chip DC Signal Amplifier based on linear frequency modulation and demodulation |
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| MA Zhuo,PAN Guoteng,GUO Yang and XIE Lunguo.An on-chip DC Signal Amplifier based on linear frequency modulation and demodulation[J].Journal of National University of Defense Technology,2012,34(3):136-141. |
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| Authors: | MA Zhuo PAN Guoteng GUO Yang and XIE Lunguo |
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| Institution: | (College of Computer,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | To amplify the DC signal is a discommodious issue,because of the on-chip DC signal has such properties as little swing,less coherence and likeliness to be interfered.In light of this,a "voltage-frequency-voltage" mode DC signal amplifier is proposed,in which the frequency is the carrier signal.This amplifier is highly linear,and is equipped with a high linearity "voltage-frequency" modulator and a "frequency-voltage" de-modulator.The simulation experimental results show that the DC signal amplifier amplifies the input voltage signal efficiently while achieving stable high linearity,and the DC gain is 2.4. |
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| Keywords: | on-Chip DC signal amplifier linearity frequency modulation demodulation |
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