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Anti-electromagnetic radiation textile simulating and testing instrument

An anti-electromagnetic radiation and tester technology, which is applied in the direction of material analysis, instrumentation, and electrical measurement using wave/particle radiation, can solve complex interference waves, affect the accuracy and reliability of test results, and achieve accurate test results , Simple structure, accurate test effect

Inactive Publication Date: 2011-05-18
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

However, because this test method and its test instruments are not specially designed for the textile field, there are some test obstacles in the test process, especially for flexible test objects, complex surfaces will cause complex interference waves, which will affect the accuracy of the test results. Accuracy and Reliability

Method used

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  • Anti-electromagnetic radiation textile simulating and testing instrument
  • Anti-electromagnetic radiation textile simulating and testing instrument
  • Anti-electromagnetic radiation textile simulating and testing instrument

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Embodiment Construction

[0021] see figure 1 2. When testing the insertion loss, the two ends of the flange coaxial device 2 are connected to the output end and the input end of the vector network analyzer 1 through an attenuator 3 respectively; the so-called insertion loss refers to the insertion loss, that is, the transmitting device and the The signal loss caused by the insertion of cables or components between the receiving devices is expressed in the corresponding decibel (db) of the received signal level, which is generally used to measure the transmittance. When testing the return loss, a reflection bridge 4 is used to connect the flange coaxial device 2 to the vector network analyzer 1 , and the other end of the flange coaxial device 2 is connected to a matching load 5 . The so-called return loss refers to the measurement of the component of the input power reflected from the flange coaxial device, which is generally used to measure the reflectivity; the matching load 5 is a radio frequency te...

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Abstract

The invention relates to an anti-electromagnetic radiation textile simulating and testing instrument which is used for simulating and testing textile material. The technical proposal is as follows: a structure comprises a vector network analyzer and a flange coaxial device. The flange coaxial device is connected with an insertion loss or return loss test loop of the vector network analyzer. The middle part of the flange coaxial device is provided with a sample frame. The outer edge of the sample frame is provided with winding gaps with uniform intervals, wherein, the spaces of the winding gaps at the edge are same. The center of the sample frame is provided with a circular hole which is coaxial with a cavity in the flange coaxial device. Electromagnetic wires forming textile to be tested are wound at the winding gaps. The anti-electromagnetic radiation a textile simulating and testing instrument can simulate and test the textile with the electromagnetic wire array of different densities and provides reliable and exact data basis for designing anti-electromagnetic radiation textile satisfying the requirement further, and the anti-electromagnetic radiation textile simulating and testing instrument has simple structure and can test soft and hard plane material exactly.

Description

technical field [0001] The invention relates to a textile material anti-electromagnetic radiation performance testing device capable of simulating the structure of a fabric against electromagnetic radiation, and belongs to the technical field of measurement. Background technique [0002] At present, there are many test methods for the shielding effectiveness of anti-electromagnetic radiation fabrics at home and abroad. These test methods mainly include three categories: far-field method, near-field method and shielding room test method. The far-field methods mainly include the ASTM-ES-7 coaxial transmission line method and the flange coaxial method, and the near-field methods mainly include the ASTM-ES-two-box method and the improved MIL-STD-285 method. [0003] A common defect of the existing testing instruments is that they can only measure the electromagnetic radiation resistance of the finished fabric, but for designers, in most cases, they want to predict the electromag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/00G01R31/00
Inventor 李瑞洲张丽娟庞金玲敖利民贾立霞杜丽娟张卫平李正涛
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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