A method and device for improving the uniformity of a reverberation chamber
A technology of reverberation chamber and uniformity, which is applied in measurement devices, transportation and packaging, chemical instruments and methods, etc., can solve the problems of poor improvement effect and single improvement factor, and achieve the effect of improving field uniformity.
Active Publication Date: 2020-12-25
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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[0003] The invention provides a method and device for improving the uniformity of a reverberation chamber, which solves the problem of single improvement factor and poor improvement effect in the existing method
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[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0024] The reverberation chamber is one of the venues for carrying out electromagnetic compatibility tests, and the reverberation chamber can be regarded as a resonant cavity with a high quality factor Q value. When the indoor transmitting antenna generates radio frequency signals, the electromagnetic energy is reflected back and forth by the wall of the reverbera...
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The invention discloses a method and a device for improving the uniformity of a reverberation chamber, which solves the problems of single improvement factor and poor improvement effect in the existing method. The method includes the following steps: performing modeling analysis on two factors affecting the uniformity of the reverberation chamber field, the length-to-width ratio of the stirring blade and the included angle of the stirring blade, and determining the factors that have the greatest influence is the first factor, and the factor with little influence is the second factor; the first factor is optimized to obtain the optimized value of the first factor; on the basis of the optimized value of the first factor, the second factor is optimized, Obtain the optimal value of the second factor; determine the combination of the optimal value of the first factor and the second factor as the optimal design value of the reverberation chamber. The invention can be extended to the design of reverberation chambers of other sizes, and provides a basis for the optimal design of the reverberation chamber stirrer, thereby achieving the purpose of improving the field uniformity of the reverberation chamber.
Description
technical field [0001] The invention relates to the field of electromagnetic compatibility, in particular to a method and a device for improving the uniformity of a reverberation chamber. Background technique [0002] Field uniformity is one of the most important performance parameters of the reverberation room. The quality of the field uniformity of the reverberation room will affect the consistency of the test results. The field uniformity of the reverberation room in the IEC 61000-4-21 standard The parameters have made clear requirements. There are many factors affecting the field uniformity of the reverberation chamber, including the size of the reverberation chamber, the structure of the mixer, the layout of the reverberation chamber, the selection of the working area in the reverberation chamber, the use of antennas, and the characteristics of the materials used in the reverberation chamber Wait. Among these factors, when the size and material of the reverberation ch...
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IPC IPC(8): G01R31/00B01F15/00
CPCG01R31/001B01F35/20
Inventor 齐万泉王淞宇刘星汛黄建领彭博
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT