Electromagnetic radiation sensitivity testing method for increasing test precision

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...

AI Technical Summary

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 field of the device under test during the test, and the test accuracy cannot be measured , resulting in inaccurate test results and unreproducible test results, etc., a method for electromagnetic radiation sensitivity testing to improve the accuracy of electromagnetic radiation sensitivity testing is proposed

Images