期刊文献+

一种适用于医学领域的频率可调滤波器

A tunable filter for medical applications
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摘要 本文提出了适用于医学领域的R-MOSFET-C滤波器,采用MOSFET代替传统RC有源滤波器中的电阻,实现可调、超低截止频率。该滤波器采用UMC 0.13 m CMOS工艺,电源电压为1.2V。仿真结果显示,当外部可调电压,即MOSFET的栅电压在0.6V到0.84V之间变化时,截止频率可随之在0.2Hz到292.8Hz之间变化。 A low-pass R-MOSFET-C filter with a tunable cutoff frequency is proposed in the paper.In the filter,a MOSFET is employed to replace the resistor in a typical topology of the RC active filter to achieve the tunable and ultra-low cutoff frequency,which is suitable for medical applications.The filter is implemented in UMC 0.13um CMOS technology with a 1.2V supply voltage.The simulation results show that the cutoff frequency ranges from 0.2Hz to 292.8Hz as the gate voltage of the MOSFET is tuned from 0.6V to 0.84V.
出处 《电路与系统学报》 北大核心 2013年第1期229-231,217,共4页 Journal of Circuits and Systems
基金 国家自然科学基金青年基金项目"光电容积脉搏波信号采集与处理集成电路设计与实现中关键基础问题的研究"(61204037) 国家重点基础研究发展计划(973计划)基金资助项目"基于多元信息的个性化易损斑块定量风险评估及其易损患者实时早期预警"(2010CB732606) 广东省引进创新科研团队"低成本健康技术创新团队"资助项目 中国科学院对外合作重点项目计划资助(GJHZ1212)
关键词 R-MOSFET-C滤波器 可调截止频率 超低截止频率 R-MOSFET-C filter tunable cutoff frequency ultra-low cutoff frequency
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参考文献6

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