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System and method for measuring shielding effectiveness of nonlinear conductive material

A technology of shielding effectiveness and measurement system, which is applied in the direction of measurement device, measurement of electrical variables, electromagnetic field characteristics, etc., to achieve the effect of low cost and simple operation

Pending Publication Date: 2022-02-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this type of material is a new type of shielding material, and there is no relevant report on how to measure its shielding effectiveness under different electric field strengths at DC-40GHz

Method used

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  • System and method for measuring shielding effectiveness of nonlinear conductive material
  • System and method for measuring shielding effectiveness of nonlinear conductive material
  • System and method for measuring shielding effectiveness of nonlinear conductive material

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Embodiment Construction

[0049] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0050] Such as figure 1As shown, a shielding effectiveness measurement system for nonlinear conductive materials of the present invention includes a measurement fixture, a measurement mode switch α, a measurement mode switch β, a sampling resistor, a voltmeter, a high-voltage AC power supply, and a vector network analyzer, wherein , one end of the positive electrode of the measuring fixture is connected to the static contact of the measurement mode switch α, the other end is connected to one end of the vector network analyzer, and the other end of the vector network analyzer is connected to the first moving contact 1 of the measurement mode switch α Connection; the negative electrode of the measurement fixture is grounded and connected to one end of the high-voltage AC power supply, the other end of the high-voltage AC power supply is connect...

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Abstract

The invention discloses a system and method for measuring shielding effectiveness of a nonlinear conductive material. The system is characterized in that one end of a positive electrode of a measurement clamp of the measurement system is connected with a static contact of a measurement mode change-over switch alpha, and the other end is connected with one end of a vector network analyzer; the other end of the vector network analyzer is connected with a movable contact 1 of the measurement mode change-over switch alpha; a negative electrode of the measurement clamp is connected with one end of a high-voltage alternating-current power supply and the ground, the other end of the high-voltage alternating-current power supply is connected with one end of a sampling resistor, the other end of the sampling resistor is connected with a measurement mode change-over switch beta, and the other end of the measurement mode change-over switch beta is connected with a movable contact 2 of the measurement mode change-over switch alpha; a voltmeter is connected in parallel with the two ends of the sampling resistor; and during measurement, the two ends of an object to be measured are electrically connected with the positive electrode and the negative electrode of the measurement clamp respectively. According to the method, the resistance of the object to be measured is measured by adopting a microstrip line method and / or voltammetry; and then the shielding effectiveness of the object to be measured is calculated, and the bandwidth can reach DC-40GHz.

Description

technical field [0001] The invention relates to a nonlinear conductive material measurement technology, in particular to a nonlinear conductive material shielding effectiveness measurement system and method, which has a wide frequency measurement range (DC-40GHz). Background technique [0002] At present, in addition to the traditional four major warfare modes of land, sea, air, and space, information warfare has become an important part of modern warfare. In modern warfare, it is unimaginable that the interference and attack of strong electromagnetic pulses will affect and threaten military electronic equipment and the human body. Under the threat of strong electromagnetic pulse, effectively protecting military equipment from the influence of strong electromagnetic pulse is an important issue for winning the information war in a complex electromagnetic environment. Building an electromagnetic shielding room is a means to effectively resist strong electromagnetic pulses, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/08G01R35/00
CPCG01R29/08G01R35/00
Inventor 郑昕原刘少斌王玲玲陈子安
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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