Design and noise analysis of a based on nonlinear magnetoelectric effect

IF 4.9 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Sensors and Actuators A-physical Pub Date : 2025-09-10 DOI:10.1016/j.sna.2025.117048

Xuan Sun , Jingen Wu , Xianfeng Liang , Yiwei Xu , Jieqiang Gao , Hui Huang , Dengfeng Ju , Jinghong Guo , Zhongqiang Hu , Ming Liu

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Abstract

Nonlinear magnetoelectric (ME) effect has been utilized to shift low-frequency signals to the vicinity of the resonance frequency to enhance the resolution of magnetic field sensors. Current readout techniques for modulated ME sensors rely on spectrum analyzers to detect the sideband signals, which hinders the practical applications due to the bulkiness and complexity of the whole sensing system. A novel ME sensor module is presented in this study that includes the ME composites, a modulation coil, and a differential charge amplifier with the demodulation and filtering circuits in a compact module, facilitating the direct detection of low-frequency magnetic field signals. Additionally, an equivalent noise circuit for the modulated ME module has been established, allowing for theoretical analysis and optimization of its noise performance. As a result, the module has achieved the detection limit of 14 pT for the magnetic field at 1 Hz. This approach is expected to overcome the limitations inherent in existing readout techniques for modulated ME sensors, enhancing the practicality and efficiency of detecting low-frequency magnetic fields.

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基于非线性磁电效应的电磁陀螺设计与噪声分析

利用非线性磁电效应将低频信号移至谐振频率附近，提高了磁场传感器的分辨率。当前调制式电磁传感器的读出技术依赖于频谱分析仪来检测边带信号，由于整个传感系统的体积和复杂性，阻碍了实际应用。本研究提出了一种新型的电磁传感器模块，该模块包括电磁复合材料、调制线圈、差分电荷放大器以及在紧凑模块中的解调和滤波电路，便于直接检测低频磁场信号。此外，还建立了调制ME模块的等效噪声电路，从而可以对其噪声性能进行理论分析和优化。因此，该模块在1 Hz的磁场下达到了14 pT的检测极限。该方法有望克服现有调制ME传感器读出技术固有的局限性，提高检测低频磁场的实用性和效率。

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来源期刊

Sensors and Actuators A-physical 工程技术-工程：电子与电气

CiteScore

8.10

自引率

6.50%

发文量

630

审稿时长

49 days

期刊介绍： Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas: • Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results. • Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon. • Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays. • Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers. Etc...