| 引用本文: | 马 卓,潘国腾,郭 阳,等.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.[点击复制] |
| MA Zhuo,PAN Guoteng,GUO Yang,et al.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[点击复制] |
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| 基于线性频率调制与解调的片上直流电压信号放大器 |
| 马 卓, 潘国腾, 郭 阳, 谢伦国 |
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(国防科技大学 计算机学院，湖南 长沙 410073)
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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。 |
| 关键词: 片内直流电压信号 放大器 线性 频率调制 解调 |
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| 基金项目:国家自然科学基金资助项目（61076025，61070036） |
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| An on-chip DC Signal Amplifier based on linear frequency modulation and demodulation |
| MA Zhuo, PAN Guoteng, GUO Yang, XIE Lunguo |
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(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. |
| Keywords: on-Chip DC signal amplifier linearity frequency modulation demodulation |
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