Electric field sensor for measuring electromagnetic pulses
An electric field sensor, electromagnetic pulse technology, applied in electrostatic field measurement, measurement device casing, shielding device, etc., can solve the problems of limiting the upper limit cutoff frequency of the sensor, low high frequency cutoff frequency, unable to meet the output impedance requirements of the rod-shaped electric small antenna, etc. , to achieve the effect of being easy to carry and transport, improving the response bandwidth and sensitivity
Inactive Publication Date: 2015-01-28
STATE GRID CORP OF CHINA +2
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Problems solved by technology
It can be seen from previous research results that most of the current sensors used for electric field measurement use rod-shaped electric small antennas as receiving antennas. T...
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[0022] Place the developed electric field sensor in the space of the measured electromagnetic pulse radiation field, make the direction of the antenna coincide with the polarization direction of the electric field to be measured, receive the optical signal output by the sensor through the optical receiver in the remote shielded room, and Use the oscilloscope to store the signal.
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The invention relates to an electric field sensor for measuring electromagnetic pulses. The electric field sensor is characterized by comprising a D-dot antenna, the D-dot antenna is successively connected with an active integrating circuit and an electric-to-optical conversion circuit so as to convert differential signals output by the antenna into original electric field signals after electric field signals in space are received and finally modulate the original electric field signals into optical signals for transmission through fibers. According to the electric field sensor for measuring the electromagnetic pulses, the electric field signals are received by use of the D-dot differential antenna, and the active integrating circuit is developed for processing the output signals of the antenna, such that the response bandwidth and the sensitivity of the sensor are improved. The antenna and a sensor main body are mounted and dismounted through threads, so that the sensitivity of the electric field sensor can be adjusted through adjusting the length of the antenna, and carrying and transportation are facilitated.
Description
technical field [0001] The invention relates to an electric field sensor for electromagnetic pulse measurement. Background technique [0002] Many scholars and research institutions have done a lot of research work on electric field sensors for electromagnetic pulse measurement. It can be seen from previous research results that most of the current sensors used for electric field measurement use rod-shaped electric small antennas as receiving antennas. The impedance matching circuit cannot meet the output impedance requirements of the rod-shaped electric small antenna, which further limits the upper limit cut-off frequency of the sensor. Contents of the invention [0003] The purpose of the present invention is to provide an electric field sensor for electromagnetic pulse measurement, which can improve the response bandwidth and sensitivity of the sensor. [0004] An electric field sensor for electromagnetic pulse measurement, which is special in that it includes a D-dot...
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Inventor 郭飞车俊禄吴旭涛谢彦召孔旭李秀广刘世涛
Owner STATE GRID CORP OF CHINA
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