| 一种精确恒定跨导偏置的Gm-C滤波器设计 |
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| 引用本文： | 郭桂良,牟荣增,杜占坤,阎跃鹏.一种精确恒定跨导偏置的Gm-C滤波器设计[J].江苏大学学报(自然科学版),2011,32(1):70-74. |
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| 作者姓名： | 郭桂良 牟荣增 杜占坤 阎跃鹏 |
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| 作者单位： | 中国科学院微电子研究所,北京,100029 |
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| 基金项目： | 国家“863”计划项目(2007AA01Z2a8) |
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| 摘 要： | 针对片上Gm-C滤波器的自动频率调谐电路结构复杂、功耗大和精度低的问题,提出了一种精确的恒定跨导偏置电路.该电路通过使跨导管的跨导恒等于片外高精度电阻来稳定滤波器截止频率.给出了电路的推导,设计了滤波器及跨导器.将此电路应用于无线传感器网络节点芯片中九阶低通滤波器,进行了仿真;基于SMIC中0.18 μm、1.8 V的...
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| 关 键 词： | 跨导-电容滤波器 无线传感网 锁相环 恒定跨导 自动频率调谐 |
Design of Gm-C filter with an accurate constant-Gm bias circuit |
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| Guo Guiliang,Mu Rongzeng,Du Zhankun,Yan Yuepeng.Design of Gm-C filter with an accurate constant-Gm bias circuit[J].Journal of Jiangsu University:Natural Science Edition,2011,32(1):70-74. |
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| Authors: | Guo Guiliang Mu Rongzeng Du Zhankun Yan Yuepeng |
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| Institution: | Guo Guiliang,Mu Rongzeng,Du Zhankun,Yan Yuepeng(Institute of Microelectronics,Chinese Academy of Sciences,Beijing 100029,China) |
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| Abstract: | To improve the complex structure,high power consumption and low precision of on-chip Gm-C filter automatic frequency tuning circuits,an accurate constant-transconductance bias circuit was proposed.The cutoff frequency of the filter was stabilized by making the transconductance of the transconductance transistor identically equal to an off-chip high precision resistor.The operation theory was derived,and the filter and transconductor were designed.The circuit was applied to the 9th order low pass filter for ... |
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| Keywords: | Gm-C filter wireless sensor network PLL constant-Gm automatic frequency tuning |
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