BIOGRAPHY

MEMS Electronic Compass: Three-axis Magnetometer [BPN599]
The goal of this is project is to develop a low-power three axis MEMS magnetic sensor suitable for use as an electronic compass in smart phones and portable electronics. Our objective is to achieve a resolution of 200 nT/rt Hz and power consumption of 5mW/axis with DC power supply of 3.3V. To enable co-integration with a 3-axis accelerometer, we seek to optimize sensor performance without the need for a vacuum seal. Although past devices designed by our group have demonstrated that our resolution goal is reachable, these devices suffered from dc offset larger than Earth�s field and required an external programmable oscillator for operation. Here, we aim to reduce offset by two orders of magnitude and develop self-oscillation loops to excite the sensor at its natural frequency.