Blender-free reverberation chamber

Abstract

The stirrer-free reverberation chamber mainly comprises a shielding chamber (1), a first capacitor plate (2), a second capacitor plate (3) and an antenna (4), the interior of the shielding chamber (1) is in a cuboid shape, and the shielding chamber (1) is provided with a front wall (11), a rear wall (12), a first side wall (13), a second side wall (14), a bottom face (15) and a top face (16). When the reverberation chamber works, the capacitance values of the equivalent capacitors on the first capacitor plate (2) and the second capacitor plate (3) can be changed. According to the reverberation chamber without the stirrer, the electric effect of the stirrer in the reverberation chamber can be achieved without using a mechanical stirrer, electromagnetic field averaging of a test area of the reverberation chamber is achieved, the averaging frequency is improved, the averaging mode is increased, meanwhile, power loss is saved, the equivalent length of the reverberation chamber is enlarged, and the lowest working frequency of the reverberation chamber is reduced.

Description

technical field [0001] The invention relates to electromagnetic compatibility testing, in particular to a reverberation chamber without agitator. Background technique [0002] In the electromagnetic compatibility test, it is necessary to place the test piece in a uniform electromagnetic field, and at the same time shield the test device to avoid disturbing the external environment. Therefore, the electromagnetic compatibility test usually needs to be carried out in an anechoic chamber or a reverberation chamber. Compared with the two, the test efficiency of the anechoic chamber is relatively low, and it is mainly used for the measurement of large devices. With the application of a large number of new technologies such as 5G communications, autonomous vehicles, electronic tags, and power carriers, many products require comprehensive electromagnetic compatibility testing, and reverberation chambers often become the preferred test environment. [0003] As an electromagnetic co...

AI Technical Summary

Problems solved by technology

The larger the stroke of the agitator, the better the averaging effect, but the stroke of the agitator is limited by the structural size

The power of the stirrer determines the stirring frequency of the stirrer, and determines the average stirring frequency of the electromagnetic field amplitude distribution in the test area. The larger the frequency, the better the averaging effect, but the higher the frequency, the more demanding the drive power of the stirrer. Large, especially larger reverberation chambers consume more power

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