輻射體的近場-遠(yuǎn)場變換研究
文內(nèi)圖片:
圖片說明:直角坐標(biāo)系下的平面測量方法
[Abstract]:With the rapid development of modern science and technology, electronic equipment tends to be integrated and miniaturized more and more. The electronic devices containing all kinds of functions and functions in the same system will inevitably produce electromagnetic interference, and the materials used in modern times also tend to be lightweight. Although this material makes it easy to use and carry, compared with the traditional metal materials, its electromagnetic shielding ability is poor and easy to cause electromagnetic leakage. Under certain space constraints, when these equipment or systems work, especially those precision instruments, the requirements for the surrounding environment are very high, and the performance of these equipment or systems may be affected by the very small electromagnetic disturbance in the environment. On the other hand, once these electronic devices work with other devices, their unintentional electromagnetic waves may also cause other functions of the system to fail to function properly. These intentional or unintentional electromagnetic interference or electromagnetic leakage may still cause certain electromagnetic energy radiation over a long distance through radio wave propagation. The problem solved in this paper is to calculate the far field electric field limit value caused by the near field electric field of electronic equipment or system radiation, and to analyze the sampling method and sampling error analysis of near field test. Firstly, according to the principle of plane spectral expansion, the principle of near-field-far-field extrapolation is studied, and the expression of far-field electric field is obtained from the near-field radiation field. The coupling product and compensation method of near-field-far-field transformation are derived by using Rolentz (Lorentz) reciprocity principle. The influence of different sampling test intervals on the results obtained by near-field-far-field transformation algorithm is analyzed, which provides a theoretical basis for the subsequent numerical model analysis. Secondly, using the dipole array as the radiator simulation model, the near-field electric field value on the sampling test plane is brought into the near-field-far-field algorithm to obtain the expression of the simulated E-plane far-field electric field, and compared with the theory, it is found that the simulated pattern is consistent with the theoretical pattern in a certain error range. Considering the actual conditions, the influence of the ground on the radiation body is analyzed, and the influence of the near field radiation value at different heights on the far field radiation is discussed. Finally, the sampling error in the measurement process is analyzed, in which three kinds of error sources are discussed: random amplitude and phase measurement error, finite plane truncation error and probe positioning error. The influence of the error on the near field measurement data is analyzed, and then the influence on the far field electric field value is analyzed. For each error source, it is introduced into the simulation model, and the error values of different sizes are compared and analyzed, and the upper bound of the error is obtained, and the error compensation method is used to correct it.
【學(xué)位授予單位】:哈爾濱工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:TN601
【相似文獻】
相關(guān)期刊論文 前10條
1 曾江燕,魯述;應(yīng)用球模展開實現(xiàn)近遠(yuǎn)場變換[J];電子科學(xué)學(xué)刊;1991年01期
2 李松柏;陳建國;竇汝海;;一維激光陣列相干合束遠(yuǎn)場特性的研究[J];應(yīng)用光學(xué);2010年01期
3 史曉剛;竇汝海;荊帥;陳建國;;相干合成系統(tǒng)的抖動對遠(yuǎn)場的影響[J];激光技術(shù);2009年05期
4 吳謹(jǐn);楊兆省;趙志龍;李斐斐;王東蕾;唐永新;蘇園園;梁娜;;單程遠(yuǎn)場衍射合成孔徑激光雷達(dá)成像實驗室演示[J];紅外與毫米波學(xué)報;2013年06期
5 高文靜;羅振瑩;白云塔;李金亮;;激光遠(yuǎn)場效能模擬計算及評估研究[J];激光與紅外;2010年12期
6 張林,,魯述;遠(yuǎn)場重建理論和數(shù)值計算方法[J];電波科學(xué)學(xué)報;1995年Z1期
7 萬國賓,侯新宇,萬偉,汪文秉;面向遠(yuǎn)場計算的波譜射線方法[J];電子學(xué)報;2000年01期
8 張光甫,劉培國,譚懷英,何建國,劉克成;基于基爾霍夫積分的近遠(yuǎn)場變換的改進[J];電波科學(xué)學(xué)報;2000年03期
9 胡鴻飛,傅德民,于丁,毛乃宏;平面近遠(yuǎn)場變換的快速算法[J];電波科學(xué)學(xué)報;2000年04期
10 李加亮;;基于綜合平面波技術(shù)的近遠(yuǎn)場變換[J];航天電子對抗;2006年04期
相關(guān)會議論文 前8條
1 孫可平;;遠(yuǎn)場渦流技術(shù)在管道檢測中的應(yīng)用[A];中國物理學(xué)會第九屆靜電學(xué)術(shù)年會論文集[C];2000年
2 孫玉忠;諸力群;徐金平;王海嬰;;縫隙輻射源近遠(yuǎn)場轉(zhuǎn)換的園柱面等效磁流法[A];第六屆全國電磁兼容性學(xué)術(shù)會議2004EMC論文集[C];2004年
3 段錦;王光騰;景文博;;激光遠(yuǎn)場能量密度分布測試系統(tǒng)的設(shè)計與實現(xiàn)[A];中國光學(xué)學(xué)會2010年光學(xué)大會論文集[C];2010年
4 馬積福;高本慶;;利用統(tǒng)一的近場—遠(yuǎn)場變換技術(shù)求解目標(biāo)時域散射遠(yuǎn)場[A];1995年全國微波會議論文集(上冊)[C];1995年
5 劉紅婕;景峰;胡東霞;彭志濤;李強;周維;張昆;;高功率激光裝置基頻光遠(yuǎn)場的模擬分析[A];第十七屆全國激光學(xué)術(shù)會議論文集[C];2005年
6 沈樹章;張學(xué)慶;;基于等效原理的遠(yuǎn)場戰(zhàn)場電磁環(huán)境分析研究[A];2009年全國無線電應(yīng)用與管理學(xué)術(shù)會議論文集[C];2009年
7 林尊琪;支婷婷;張明科;張臻;;激光遠(yuǎn)場CCD成像技術(shù)應(yīng)用[A];'99十一省(市)光學(xué)學(xué)術(shù)會議論文集[C];1999年
8 萬敏;蘇毅;張衛(wèi);;激光初始光場的強度分布特性對遠(yuǎn)場能量集中度的影響[A];中國工程物理研究院科技年報(2001)[C];2001年
相關(guān)碩士學(xué)位論文 前8條
1 盧佩佩;輻射體的近場-遠(yuǎn)場變換研究[D];哈爾濱工業(yè)大學(xué);2015年
2 費學(xué)拯;遠(yuǎn)場矩陣的對稱性及數(shù)據(jù)缺失情況下障礙邊界重構(gòu)的問題研究[D];吉林大學(xué);2007年
3 鄧霞;傳輸問題遠(yuǎn)場算子的性質(zhì)[D];華中師范大學(xué);2005年
4 劉健;管道遠(yuǎn)場渦流無損檢測方法的研究[D];沈陽工業(yè)大學(xué);2011年
5 趙捷;關(guān)于傳導(dǎo)逆散射問題遠(yuǎn)場算子性態(tài)的研究[D];華中師范大學(xué);2005年
6 夏雷;基于模式展開法的球面近遠(yuǎn)場變換理論研究[D];西安電子科技大學(xué);2012年
7 孫立春;球面近遠(yuǎn)場變換理論及相關(guān)技術(shù)的研究[D];西安電子科技大學(xué);2013年
8 黃春華;電大尺寸目標(biāo)近場測量中的近遠(yuǎn)場變換技術(shù)研究[D];南京航空航天大學(xué);2012年
本文編號:2511284
本文鏈接:http://sikaile.net/kejilunwen/dianzigongchenglunwen/2511284.html