本文關鍵詞：FDTD結合SVD研究混響室　出處：《西安電子科技大學》2015年碩士論文　論文類型：學位論文

  更多相關文章： 混響室 時域有限差分 矩陣奇異值分解 建模與仿真

【摘要】：在電磁兼容技術中,混響室具有以下的突出優(yōu)點:造價低廉并且場強度高。因此,近年來混響室已經迅速發(fā)展成為電磁兼容測試技術中一種不可或缺的測試場地,并且得到了深入的研究。本文首先介紹了混響室的研究背景和國內外對混響室的研究動態(tài);然后介紹混響室的相關理論,包括矩形腔體理論、諧振模式�；祉懯业闹饕阅軈�,包括混響室時間常數、混響室的過模諧振、品質因數、最低可用頻率以及模式密度等等。接著闡述了混響室的三種攪拌方式以及混響室的評價標準和混響室的空腔校準的知識。論文第三部分介紹了本篇論文涉及到了電磁算法 時域有限差分算法,以及數據后處理的算法 矩陣奇異值分解。與此同時,也闡述了電磁仿真的知識以及其他的電磁算法,比如矩量法和有限元法,并且引入了傅里葉變換的知識。最后基于時域有限差分法對混響室腔體內各個部分進行建模與仿真,接著具體分析了各種情形下的電場分布。同時,論文把頻域的圖像變化到了頻域和空間域,探討了在不同的頻率以及不同的攪拌器的攪拌角度下頻域和空間域下的觀察面上電場分布情況。本文的重點在于基于時域有限差分算法和矩陣奇異值分解算法對混響室建模仿真和性能分析。建模包含了腔體的建模,天線的建模和攪拌器的建模。通過在MATLAB平臺上編制FDTD程序分析了混響室矩形腔體內各種情形下的電場分布情況。基于FDTD的電磁場仿真結果,采用SVD技術分析混響室內的電場以及分析了三個矩陣U、矩陣S和矩陣V的物理含義,并且提出了混響室腔體電場階量的概念。
[Abstract]:In EMC technology, reverberation chamber has the following outstanding advantages: low cost and high field strength. In recent years, reverberation chamber has been rapidly developed as an indispensable test site in electromagnetic compatibility testing technology. Firstly, the background of reverberation chamber and the research trends of reverberation chamber at home and abroad are introduced. Then the related theories of reverberation chamber are introduced, including rectangular cavity theory, resonant mode, main performance parameters of reverberation chamber, including reverberation chamber time constant, reverberation chamber over-mode resonance, quality factor. The lowest available frequency and mode density, etc. Then, three kinds of mixing methods of reverberation chamber, the evaluation standard of reverberation chamber and the knowledge of cavity calibration of reverberation chamber are expounded. The third part of the paper introduces the three kinds of mixing methods of reverberation chamber and the knowledge of the cavity calibration of reverberation chamber. Electromagnetic algorithm. Finite-difference time-domain algorithm. At the same time, the knowledge of electromagnetic simulation and other electromagnetic algorithms, such as moment method and finite element method, are also described. Finally, based on the finite difference time-domain (FDTD) method, modeling and simulation of each part of reverberation chamber is carried out, and then the electric field distribution under various circumstances is analyzed concretely. In this paper, the image in frequency domain is changed to frequency domain and space domain. The electric field distribution in frequency domain and space domain at different frequency and agitator angles is discussed. The emphasis of this paper is based on the finite difference time domain (FDTD) algorithm and matrix singular value decomposition (SVD) algorithm. Reverberation chamber modeling and performance analysis. Modeling includes cavity modeling. The modeling of antenna and agitator. The electric field distribution in the rectangular cavity of reverberation chamber is analyzed by making FDTD program on MATLAB platform. Simulation of electromagnetic Field based on FDTD. Fruit. The SVD technique is used to analyze the electric field in reverberation chamber and the physical meaning of three matrices U, matrix S and matrix V are analyzed, and the concept of electric field level of reverberation chamber cavity is put forward.
【學位授予單位】：西安電子科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN03

【參考文獻】

相關期刊論文 前8條

1 賈銳;王慶國;劉逸飛;王樹嶠;;混響室加載布局對測試區(qū)域場特性的影響[J];高電壓技術;2013年12期

2 張鋒;逯貴禎;姜榮;李欽;;基于FDTD的混響室場均勻性仿真分析[J];中國傳媒大學學報(自然科學版);2013年01期

3 王松;武占成;崔耀中;;混響室三維數值仿真的研究進展[J];河北師范大學學報(自然科學版);2013年01期

4 崔耀中;魏光輝;范麗思;萬浩江;劉小強;;混響室攪拌器位置優(yōu)化的數值分析[J];電訊技術;2010年06期

5 曲敏;逯貴禎;林金才;關亞林;;混響室內場分布統(tǒng)計特性的研究[J];中國傳媒大學學報(自然科學版);2008年02期

6 李春雷 ,鄧波 ,高斌 ,高攸綱 ,李書芳;混響室的仿真與優(yōu)化[J];安全與電磁兼容;2004年06期

7 張林昌;混響室及其進展(下)[J];安全與電磁兼容;2002年01期

8 張林昌;混響室及其進展(上)[J];安全與電磁兼容;2001年04期

，

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