Reverberation Chamber Research Based On FDTD And SVD Algorithm

In the electromagnetic compatibility technology, the reverberation chamber has the following outstanding advantages: low cost and high field strength. Therefore, in recent years,the reverberation chamber which is further studied has been developed rapidly as a kind of indispensable testing grounds in the electromagnetic compatibility testing technology.In this paper, the research background and the research of reverberation chamber at home and abroad are introduced firstly.Then the theory of reverberation chamber is introduced,including the rectangular cavity theory and resonant modes. Then the paper introduces main performance parameters of the reverberation chamber, including the time constant reverberation chamber, reverberation chamber over mode resonator, quality factor, the lowest usable frequency and pattern density and so on.Then it elaborates three stirred reverberation chamber methods ? evaluation criteria reverberation chamber and reverberation chamber cavity alignment knowledge.The third part of this paper describes the algorithm involves electromagnetic- FDTD algorithm, and the algorithm after data processing- Matrix Singular Value Decomposition. At the same time, also describes the electromagnetic simulation of knowledge and other electromagnetic algorithms, such as the method of moments and the finite element method, and the introduction of the knowledge of the Fourier transform.Finally,based on the FDTD method for the modeling and simulation of various parts of the reverberation chamber, the paper makes a detailed analysis of the electric field distribution under various situations. Meanwhile,the paper makes the thesis of the image change from the frequency domain to the frequency domain and spatial domain, and discusses the electric field distribution in space domain on the condition that the frequency is different or the stirrer is under different angles.This paper focuses on the performance analysis of reverberation chamber based on modeling and simulation of reverberation chambers using FDTD algorithm and singular value decomposition algorithm. Modeling includes the cavity modeling, antenna modeling and modeling of agitator.Through the design of FDTD program on MATLAB platform,the paper makes an analysis of the distribution of the electric field of various scenarios in the reverberation chamber rectangular cavity.Based electromagnetic field simulation results using FDTD algorithm and SVD algorithm, the paper make an analysis of reverberation chamber and analyzed the physical meaning of field the U matrix, S matrix and matrix V, and proposes the concept of reverberation chamber cavity field Order quantity.