Highly Sensitive CMOS Magnetoimpedance Sensor Using Miniature Multi-Core Head Based on Amorphous Wire
Magnetics, IEEE Transactions （2014）
摘要
We newly report a highly sensitive CMOS magnetoimpedance (MI) sensor based on a miniature multi-core head (~2 mm2). The miniature head consists of 13 μm diameter amorphous wires and pick-up coils totaling 250 turns. In this paper, the sensitivity and noise level of the prototype sensor is investigated. We showed that the noise floor of the prototype sensor is lower than 100 pT/Hz1/2 for the frequency range of 20-500 Hz. We estimated the peak-induced voltage at the pick-up coil on the basis of off-diagonal impedance theory. The results obtained in this paper will be useful for designing a highly sensitive MI sensor based on a miniature multi-core head with a CMOS pulse circuit.
更多查看译文
关键词
CMOS integrated circuits,amorphous magnetic materials,coils,electric impedance measurement,magnetic sensors,pick-ups,pulse circuits,wires (electric),CMOS pulse circuit,MI sensor,amorphous wire,frequency 20 Hz to 500 Hz,highly sensitive CMOS magnetoimpedance sensor,miniature multicore head,off-diagonal impedance theory,pick-up coil,size 13 mum,Amorphous wire (a-wire),magnetic sensor,magnetoimpedance (MI) element,miniature head
AI 理解论文
溯源树
样例
生成溯源树，研究论文发展脉络
Chat Paper
正在生成论文摘要