A pulsed magnetic field sensor based on dual-loop differential structure

Wang Ke; Duan Yantao; Shi Lihua; Zhang Qi; Fu Qingfeng

doi:10.11884/HPLPB202234.210337

Volume 34 Issue 4

Mar. 2022

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Article Navigation > High Power Laser and Particle Beams > 2022 > 34(4): 043003

Wang Ke, Duan Yantao, Shi Lihua, et al. A pulsed magnetic field sensor based on dual-loop differential structure[J]. High Power Laser and Particle Beams, 2022, 34: 043003. doi: 10.11884/HPLPB202234.210337

Citation:

Wang Ke, Duan Yantao, Shi Lihua, et al. A pulsed magnetic field sensor based on dual-loop differential structure[J]. High Power Laser and Particle Beams, 2022, 34: 043003. doi: 10.11884/HPLPB202234.210337

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A pulsed magnetic field sensor based on dual-loop differential structure

doi: 10.11884/HPLPB202234.210337

Wang Ke^{1, 2
,},
Duan Yantao^{2
,
,},
Shi Lihua²,
Zhang Qi²,
Fu Qingfeng²

1.
Unit 91336 of PLA, Qinhuangdao 066326, China
2.
National Key Laboratory on Electromagnetic Environment Effects and Electro-Optical Engineering, Army Engineering University of PLA, Nanjing 210007, China

Received Date: 2021-07-31
Accepted Date: 2021-12-08
Rev Recd Date: 2021-12-03

Available Online: 2021-12-13

Publish Date: 2022-03-19

Abstract

Abstract

Magnetic field measurement in a strong electric field environment such as a lightning strike is one of the difficulties in electromagnetic pulse measurement technology. The traditional shielded small-loop antenna introduces radial asymmetry due to the output end structure, and it is difficult to avoid electric field interference. In response to this, this paper has developed a pulsed magnetic field sensor based on a dual-loop differential structure, which is composed of a dual-loop antenna and an optical transmission system. According to the distribution electromagnetic characteristics of the near-field, the dual-loop antenna chooses to be placed in parallel mirror symmetry, so that the terminal voltage can be divided into the magnetic field response component and the electric field response component, and then the electric field response component is removed by the differential circuit to obtain the pure magnetic field response component. Experiments have shown that in the nearby lightning strike electromagnetic field environment simulator, the dual-loop sensor has stronger anti-interference capability than the single-loop sensor, and can achieve accurate magnetic field measurement.
- lightning strike near field,
- magnetic field measurement,
- electric field interference,
- dual-loop differential structure,
- magnetic field sensor

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References(16)

References

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