Developing Highly Sensitive SAW Standing Wave Magnetic Sensor Through Resonant Frequency Shift and Acoustic Energy Concentration

被引：0

作者：

Ma, Zhi-Ling ^{[1
]}

Jin, Jian-Hua ^{[1
]}

Ou-Yang, Jun ^{[1
]}

Chen, Shi ^{[1
]}

Yang, Xiao-Fei ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Elect Sci & Technol, Wuhan 430074, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2024年 / 24卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Magnetic fields; Magnetic sensors; Sensitivity; Magnetostriction; Magnetoacoustic effects; Magnetic resonance; Magnetoelectric effects; Delta E/Delta G effect; magnetoelastic coupling; magnetostrictive; surface acoustic wave (SAW);

D O I：

10.1109/JSEN.2024.3374795

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This study focuses on the design and optimization of surface acoustic wave (SAW) magnetic field sensors. We designed and fabricated a SAW standing wave magnetic sensor, successfully enhancing its sensitivity by exploiting both the equivalent acoustic velocity variation induced by the Delta G effect of magnetostrictive materials and the concentration effect of acoustic energy. The experimental results reveal a linear enhancement in sensor sensitivity correlated with the increasing input voltage, peaking at 0.67 mV/Oe under a 1 V input. This design breakthrough introduces novel possibilities for magnetic field detection technology, providing fresh insights and design pathways for the advancement of high-sensitivity magnetic field sensors.

引用

页码：14076 / 14081

页数：6

共 5 条

[1] Highly sensitive surface acoustic wave magnetic field sensor based on the loss mechanism
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[2] REDUCTION OF THE DEPENDENCE OF THE FREQUENCY OF A PASSIVE RESONANT SURFACE ACOUSTIC WAVE SENSOR WITH MAGNETIC COUPLING ON THE ANGLE OF ROTATION OF THE SHAFT
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[3] Reduction of the dependence of the frequency of a passive resonant surface acoustic wave sensor with magnetic coupling on the angle of rotation of the shaft
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[4] ENERGY-LOSS AND FREQUENCY-SHIFT OF THE THICKNESS SHEAR-MODE ACOUSTIC-WAVE SENSOR IN FLOWING SOLUTIONS
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