科研之友
微信
新浪微博
Facebook
分享链接
摘要
For capacitive biopotential measurement, a novel high input impedance front-end is proposed. The input impedance of the front-end can achieve more than 100 G Omega by matching the peripheral parameters. The front-end's noise model is provided, and noise optimization is given further. The analysis shows the proposed front-end can achieve at least two orders of input impedance more than the non-inverting amplifier circuit with the same peripheral parameters at the cost of only increasing twice input-referred noise. The final experimental results verify the analysis and show the front-end's feasibility of capacitive sensing electrocardiogram signal.
