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Broadband electromagnetic radiation testing method of electronic product in open cavity structure

An electronic product and electromagnetic radiation technology, which is applied in the field of electromagnetic radiation testing, can solve problems such as complete coverage of equipment and inability to carry out test projects

Inactive Publication Date: 2017-10-10
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, there is no sound equipment to fully cover the electromagnetic radiation projects that require thousands or even tens of thousands of orders, and many experimental projects cannot be carried out

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] In order to clearly illustrate the technical features of the solution, the solution will be described below through a specific implementation manner.

[0019] Examples of this program:

[0020] First, determine the electromagnetic environment level A that needs to be tested, and then shield the external cavity of the electronic product. The shielding treatment method of the external cavity of the electronic product is as follows: the opening end of the cavity of the electronic product is sealed and shielded with a shielding material similar to the connection structure of the cavity.

[0021] Then, conduct a shielding effectiveness test on the shielded cavity. The test is carried out in accordance with GJB5185-2003 "Measurement Method for Shielding Effectiveness of Small Shielding Objects". A shielding test point is set every 0.5 GHz to obtain the shielding amount B.

[0022] The equivalent electromagnetic environment level C of shielded electronic products is obtained ...

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PUM

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Abstract

The invention provides a broadband electromagnetic radiation testing method of an electronic product in an open cavity structure. The method comprises the following steps of: determining an electronic environmental grade A to be conducted; testing the shielding effectiveness B after shielding treatment on the electronic product cavity; calculating an equivalent electromagnetic environment C after shielding, wherein C=A-B; and conducting a small power electromagnetic radiation experiment according to the electromagnetic environment C after shielding. The invention can provide a method of conducting the electromagnetic radiation test of the electronic product when no equipment meets the external electromagnetic environmental conditions and an equivalent small power testing method when no equipment can provide a high strength electromagnetic environment, so that the equivalent test of the electronic product is performed.

Description

technical field [0001] The invention relates to the field of electromagnetic radiation testing, in particular to a wide-band electromagnetic radiation testing method for electronic products inside an open cavity structure. Background technique [0002] For the electromagnetic radiation test methods of electronic products, GJB151A, GJB151B and GJB7073 are commonly used at present. The domestic equipment for the electromagnetic environment in this type of standard is relatively sound, and the electromagnetic environment generated by the equipment can be directly used in the laboratory to carry out radiation tests. None of the generated electromagnetic environment field strengths exceeds 200V / m, that is, the method in the standard is only applicable to electromagnetic radiation tests with field strengths not exceeding 200V / m. For the field strength of the electromagnetic environment greater than 200V / m, as mentioned in the requirements of GJB1389A on the electromagnetic radiati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 焦敏周伟郭俊强杨荷张中才韩萌萌杨波
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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