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.
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页数：7
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