Electromagnetic radiation sensitivity testing method for increasing test precision

A technology of electromagnetic radiation and testing methods, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of inaccurate test results, unmeasurable test accuracy, and unreproducible test results, so as to improve test accuracy and test results. Accurate results and reproducible test results

Active Publication Date: 2009-09-02
BEIHANG UNIV
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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the adjustment of the power amplitude in the system-level electric field radiation sensitivity test mainly depends on the experience of the tester, and it is not easy to achieve the uniformity condition required by the internal coupling

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  • Electromagnetic radiation sensitivity testing method for increasing test precision
  • Electromagnetic radiation sensitivity testing method for increasing test precision
  • Electromagnetic radiation sensitivity testing method for increasing test precision

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Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] The present invention is a kind of electromagnetic radiation sensitivity test method that improves test accuracy, and the flow process is as follows: figure 1 shown, including the following steps:

[0029] Step 1: Use a single radiating antenna to radiate from the far field at the test site, place an electric field sensor at the test site, and increase the output power of the radiating antenna from zero until the output power value of the radiating antenna reaches the field strength at the test site exceeding the electric field Sensitivity of the sensor, record the radiation power of the radiation antenna at this time as P 1 , the distance between the radiating antenna and the electric field sensor is D 1 , the measured value of the electric field sensor is E 1 ;

[0030] The electric field of the electric field sensor reaches the electric field st...

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Abstract

The invention discloses an electromagnetic radiation sensitivity testing method for increasing test precision, which comprises six steps: a single radiating antenna is used for radiating from a far field, and the radiating power of the antenna, the field intensity value of electric-field sensors and the distance between the antenna and the electric-field sensors are measured; a tested device is placed, and a plurality of electric-field sensors are arranged; the values of the electric-field sensors are recorded at the moment; the radiating antenna is approached to the tested device, the difference of the field intensity value at the moment and the field intensity measured in the last step is from 0dB to 6 dB, and the values of the electric-field sensors are recorded at the moment; the power of the radiating antenna is calculated in standard field intensity; and a sensitivity test is carried out. The invention gives out satisfying conditions between the radiation field intensity Elim prescribed by a testing standard and the radiation power P of the radiating antenna, utilizes an antenna theory to calculate the satisfying conditions between the power of the radiating antenna and the measuring field intensity value of a testing point when an internal coupling field of the tested device reaches the testing requirement and gives out a quantized calculating method, thereby increasing the precision of the electromagnetic radiation sensitivity test, and ensuring that a testing result is accurate and can repeatedly appear.

Description

technical field [0001] The invention relates to an electromagnetic compatibility radiation sensitivity test method, in particular to an electromagnetic radiation sensitivity test method which improves test accuracy. Background technique [0002] According to GJB152A-97 "Measurement of Electromagnetic Emission and Sensitivity of Military Equipment and Subsystems", the radiation susceptibility test is used in the electromagnetic compatibility test to check the ability of the equipment under test and related cables to withstand the radiated electric field. [0003] The frequency of the electric field radiation sensitivity test is from 10kHz to 40GHz, or even higher, covering most of the electromagnetic spectrum that has been used. It is one of the most extensive, important, and most representative sensitivity test items. [0004] Radiation sensitivity tests have also been promoted since the 1960s, and have been used in military standards in many countries so far, such as MIL-ST...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 戴飞苏东林高万峰曹成
Owner BEIHANG UNIV
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