Two-dimension full automatic electromagnetic field distribution testing system

Abstract

The invention relates to a two-dimension full automatic electromagnetic field distribution testing system and belongs to the technical field of electromagnetic field experimental testing. The system comprises a two-dimension electric control translation platform, a vector network analyzer, a waveguide testing system and a control and data processing system, the waveguide testing system comprises a sending pole antenna, a receiving pole antenna, an upper metal plate, a lower metal plate, a wave absorbing material, a parallel waveguide testing cavity and a testing cavity opening device, and the parallel waveguide testing cavity is formed by the upper metal plate and the lower metal plate. The position of a receiving pole on the upper metal plate is changed so that the system can achieve electromagnetic field measurement of larger spacial ranges and large electromagnetic wave scanning frequencies; the moving of the receiving pole antenna in a vertical direction is controlled so that the measurement of electromagnetic fields with different heights can be achieved; and two sending modes of point sources and plane wave sources can be achieved, the electromagnetic fields in a parallel waveguide testing cavity can be rapidly, accurately and full automatically scanned and tested, and the two-dimension full automatic electromagnetic field distribution testing system has important application to the field of electromagnetic field experimental testing.

Description

technical field [0001] The invention relates to a two-dimensional automatic electromagnetic field distribution testing system, which belongs to the technical field of electromagnetic field experiment testing. Background technique [0002] For a long time, the development of electromagnetism in theoretical experiments and practical applications has been largely restricted by the development of electromagnetic field testing technology. For example, in the study of the zero-refraction characteristics of metamaterials, it is necessary to generate a relatively stable typical electromagnetic field distribution, and to realize the measurement of the amplitude and phase angle in the field more accurately. A test system that can realize such a function should have the following characteristics: 1) It can measure a wide range of plane space. 2) The receiving pole antenna can move in the vertical direction, so that the test results can reflect the change of the electromagnetic field i...

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Problems solved by technology

[0003] At present, there are some experimental test platforms that can be used for electromagnetic field measurement at home and abroad, but their application still has certain limitations, because the test range is small, and the receiving pole antenna has no freedom of movement in the vertical direction. The energy received by its poles is small, and the test effect is poor

At the same time, the lifting and supporting devices of the upper metal plate of the existing test platform have the disadvantages of complex structure and inconvenient operation.

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