High SNR magnetoelectric sensor with dual working modes for wideband magnetic field detection

被引：3

作者：

Sun, Xuan ^{[1
]}

Wu, Jingen ^{[1
]}

Gao, Jieqiang ^{[1
]}

Wang, Guanying ^{[2
]}

Liang, Xianfeng ^{[2
]}

Li, Fuchao ^{[3
]}

Lin, Bomin ^{[1
]}

Du, Yongjun ^{[1
]}

Xu, Yiwei ^{[1
]}

Huang, Hui ^{[2
]}

Hu, Zhongqiang ^{[1
]}

Guo, Jinghong ^{[2
]}

Liu, Ming ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Engn Res Ctr Spin Quantum Sensor Chips, Sch Elect Sci & Engn,Univ Shaanxi Prov, State Key Lab Mfg Syst Engn,Elect Mat Res Lab,Key, Xian 710049, Peoples R China

[2] State Grid Smart Grid Res Inst Co LTD, Inst Elect Power Sensing Technol, Beijing 102209, Peoples R China

[3] State Grid Sichuan Elect Power Co, Chengdu 610041, Peoples R China

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2024年 / 365卷

关键词：

Magnetoelectric effect; Wideband; Magnetic sensor; High SNR; LIMIT;

D O I：

10.1016/j.sna.2023.114904

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：

Magnetoelectric (ME) composites exhibit extremely high sensitivity for magnetic field at the fixed resonant frequency, due to the strong strain-mediated ME coupling. However, wideband magnetic field detection is still challenging, as the ME coefficient depends strongly on the frequency. In this work, we propose a magnetoelectric sensor composed of three ME units in series/parallel connections, which works at dual modes to extend the frequency range with high signal-to-noise ratio (SNR). The SNR is enhanced by about 22.68 dB and the bandwidth is broadened from 100 Hz to 1 kHz, with a high sensitivity for frequency conversion mode by series/ parallel connections. Limits of detections (LoDs) as low as 207 pT and 460 pT are demonstrated at 1 kHz and 100 kHz, respectively, showing promising applications in wideband magnetic field detection.

引用

页数：7

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