Electric Field Sensor for Electromagnetic Pulse Measurement

Kumar, Dinesh; Prakash, Neelam Rup; Singh, Sukhwinder

doi:10.1080/02564602.2018.1536527

Cited by 9 publications

(3 citation statements)

References 5 publications

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“…The directions of the internal electric field and the surrounding electric field are opposite, and the strength and frequency of the internal electric field are the same as those of the external electric field [23,24]. As shown in Figure 1(a), if the conductor is divided into two separate parts, such as two hemispheres of a spherical sensor or two plates of a parallel plate sensor, under the action of an external electric field E, the two polar plates will induce charge Q [25][26][27]; assuming that the areal density of the induced charge is σ ðtÞ and the dielectric constant of the medium between the plates is ε, then, the induced charge of the plate has the following relationship with the measured external electric field strength:…”

Section: Measuring Principle and Signal Distortion Analysismentioning

confidence: 99%

Research on the Three‐Dimensional Power Frequency Electric Field Measurement System

et al. 2021

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It is of great significance to accurately provide electric field information for electric power operators and electric power inspection equipment to ensure the safety of live working robots and electric power workers. In this paper, the principle of parallel plate charge induction is used to detect electric field signals and the influence of the inherent capacitance of the parallel plate on the back-end circuit is considered. An equipotential ring is used as the structure of the sensing unit to eliminate the uncertainty generated by the edge electric field. The parameters of the sensor probe are determined by the principle of differential-integration, and its structure is analyzed and designed. The consistency of the designed sensor probe was analyzed, and the results show that the consistency of the sensor is better. We have measured the sensitivity coefficients of the six probes, and the average absolute deviation reached 0.031556. The fits were all above 0.9995. In addition, a three-dimensional power frequency electric field measurement system that is easy to manufacture is designed using the hexahedral structure, which solves the problem of inaccurate electric field measurement caused by the parallel plate probe and the field source being not perpendicular, and the combined field strength formula of nonuniform electric field was obtained. In the laboratory environment, the three-dimensional power frequency electric field measurement system produced in this paper is compared with the electric field simulated by an electric field simulation tool. The test results show that the deviation between the measurement system and simulation is within ±0.55%, the measurement range is 1 kV/m–200 kV/m, the resolution is ≥1 V/m, and the maximum electric field can be measured at 200 kV/m. The nonlinear error is 2.15%, and the sensitivity coefficient is 19.10 mV / kV · m − 1 , which meets the measurement requirements of the power frequency electric field and can be applied to the actual power frequency electric field measurement.

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Section: Measuring Principle and Signal Distortion Analysismentioning

confidence: 99%

Research on the Three‐Dimensional Power Frequency Electric Field Measurement System

et al. 2021

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“…Currently, traditional D-Dot electric field sensors can achieve bandwidths exceeding 10 GHz [9] , while MEMS electric field sensors, as developed by Andreas Kainz and colleagues at Vienna University of Technology in 2018, have demonstrated dynamic ranges extending to 10 2 -10 5 V=m [10] . Nonetheless, these sensors exhibit noteworthy limitations in their inability to simultaneously satisfy the requirements for large bandwidth and large dynamic range characteristics.…”

Section: Introductionmentioning

confidence: 99%

QAM signal with electric field sensor based on thin-film lithium niobate [Invited]

Li,

Liu,

Pan

et al. 2023

Chin. Opt. Lett.

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Large-bandwidth, high-sensitivity, and large dynamic range electric field sensors are gradually replacing their traditional counterparts. The lithium-niobate-on-insulator (LNOI) material has emerged as an ideal platform for developing such devices, owing to its low optical loss, high electro-optical modulation efficiency, and significant bandwidth potential. In this paper, we propose and demonstrate an electric field sensor based on LNOI. The sensor consists of an asymmetric Mach-Zehnder interferometer (MZI) and a tapered dipole antenna array. The measured fiber-to-fiber loss is less than −6.7 dB, while the MZI structure exhibits an extinction ratio of greater than 20 dB. Moreover, 64-QAM signals at 2 GHz were measured, showing an error vector magnitude (EVM) of less than 8%.

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“…Nevertheless, the output is a direct current (DC) voltage corresponding to the amplitude of the electric field, where the frequency domain and the time domain information of the signal are missing. D-dot type electric field sensors have been extensively studied in recent years because of their ability to achieve high-power sensing in the operation bandwidth up to 10 GHz [3][4][5][6]. However, the D-dot-type sensors generally have a large size up to tens of centimeters.…”

Section: Introductionmentioning

confidence: 99%

Broadband and Remote Electromagnetic Spectrum Sensing Based on Photonic Electric Field Sensor Chip

Liu

Zhao

et al. 2022

Photonics

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Electromagnetic spectrum sensing is quite important for communication safety in commercial wireless communication, as well as for the equipment paralysis of rivals and self-protection in modern warfare. Specifically, a passive electric field sensor featured with broadband, remote sensing capabilities and small size is urgently needed to realize spectrum sensing. Here, we demonstrate a photonic electric field sensor operating in the frequency range of 10 MHz to 26.5 GHz. Based on the electric field sensor, distortion-free sensing of on–off keying signals centered at 3 GHz is achieved under a bit rate up to 40 Mb/s. In addition, remote electromagnetic spectrum sensing is also demonstrated up to 70 km, where the signal-to-noise ratio is measured to be larger than 20 dB.

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Electric Field Sensor for Electromagnetic Pulse Measurement

Cited by 9 publications

References 5 publications

Research on the Three‐Dimensional Power Frequency Electric Field Measurement System

Research on the Three‐Dimensional Power Frequency Electric Field Measurement System

QAM signal with electric field sensor based on thin-film lithium niobate [Invited]

Broadband and Remote Electromagnetic Spectrum Sensing Based on Photonic Electric Field Sensor Chip

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