Modeling and the signal-to-noise ratio research of magnetoelectric sensors at low frequency

The authors have modeled magnetoelectric (ME) laminate sensor units by considering both the ME laminate and detection circuitry. Theory predicts and experiments confirm that the signal-to-noise ratio increases with increasing frequency in the low frequency range. Our findings provide useful insights into ME sensitivity estimation and "real-world" low frequency magnetic anomaly detection by ME sensors. (c) 2007 American Institute of Physics.