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Design of Self-Integrating Transient Surface Current Density Sensor Integrated Fiber Transmission Link by Yifei Liu; Wei Wu; Xin Nie; Mo Zhao; Jiaqi Wang; Feng Wei; Wenbing Wang; Jinxi Li is a Engineering article available to read on EtoBox.

What is Design of Self-Integrating Transient Surface Current Density Sensor Integrated Fiber Transmission Link about?

The transient surface current density reflects the external coupling of the electromagnetic pulse (EMP) to the tested device. In this paper, the generation mechanism and measurement principle of conductor surface current density are introduced, and the surface current density distribution irradiated by EMP on a typical aircraft structure is simulated and analyzed. The traditional surface current density is usually measured by B-dot antenna, but its output signal is the differential of the measured signal, so additional integrators or numerical integration of the measured data are required. In this paper, a self-integrating surface current sensor based on optical fiber transmission is designed based on the shielded loop antenna with gap structure. The output signal is the real signal waveform to be measured. Compared with coaxial cables, integrated optical fiber transmission improves the anti-interference ability of long-distance transmission signals. At the same time, the design process of the sensor is introduced in detail. The bandwidth of the sensor is 300 kHz~500 MHz, the sensitivity is calibrated at 1.23 (A·m^−1^)/mV, and the dynamic range is ±25~1400 A·m^−1^ (35 dB). The surf

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Author

Yifei Liu; Wei Wu; Xin Nie; Mo Zhao; Jiaqi Wang; Feng Wei; Wenbing Wang; Jinxi Li

Publisher

MDPI AG

Published

2023

Language

EN

Field

Engineering (Physical Sciences)