發(fā)布時間：2018-03-10 17:03

  本文選題：金屬腔體　切入點：不同耦合途徑　出處：《高電壓技術(shù)》2016年05期 　論文類型：期刊論文

【摘要】：為研究金屬腔體不同耦合途徑對腔內(nèi)電磁耦合的影響,基于時域有限積分方法建立了電磁波輻射條件下金屬腔體不同耦合途徑計算模型,引入不同耦合途徑對比系數(shù)評價指標,分析了孔縫、貫通導線兩種耦合途徑對腔內(nèi)電磁耦合的影響,采用吉赫茲橫電磁波(GTEM)室、矢量網(wǎng)絡分析儀等搭建了一種新的耦合試驗平臺對計算結(jié)果進行驗證。研究表明:該試驗方法準確性好;腔內(nèi)電磁耦合受孔縫、貫通導線共同作用,開孔腔體加載短貫通導線時腔內(nèi)耦合主要受腔體諧振影響,加載長貫通導線腔內(nèi)耦合還受到貫通導線自身諧振影響;頻率在153 MHZ以下時貫通導線為主要耦合途徑;高頻時,若開孔尺寸遠大于貫通孔尺寸,腔體諧振頻率附近貫通導線為主要耦合,貫通導線自身諧振頻率附近貫通導線也為主要耦合途徑,其他頻點處孔縫為主要耦合途徑。
[Abstract]:In order to study the influence of different coupling paths of metal cavity on electromagnetic coupling in cavity, a computational model of different coupling paths for metal cavity under electromagnetic wave radiation is established based on the finite integral time domain method, and the comparison coefficient evaluation index of different coupling paths is introduced. In this paper, the influence of two kinds of coupling ways, aperture and traverse, on the electromagnetic coupling in the cavity is analyzed. The GTEM chamber is used in the Ghertz transverse electromagnetic wave chamber. A new coupling test platform has been set up to verify the calculation results. The results show that the accuracy of the test method is good, and the electromagnetic coupling in the cavity is subjected to the joint action of holes and traverse. The intracavity coupling is mainly affected by cavity resonance when the cavity is loaded with a short perforated conductor, and the coupling within the cavity is also affected by its own resonance when the frequency is less than 153 MHZ, and at high frequency, when the frequency is less than 153 MHZ, the internal coupling is mainly affected by the cavity resonance, and at high frequency, when the frequency is less than 153 MHZ, If the size of the open hole is much larger than the size of the perforated hole, the main coupling is near the resonant frequency of the cavity, the main coupling path is the through wire near the resonant frequency of the penetrating conductor itself, and the main coupling path is the hole slit at other frequency points.
【作者單位】： 電子信息系統(tǒng)復雜電磁環(huán)境效應國家重點實驗室;軍械工程學院靜電與電磁防護研究所;
【基金】：973項目(613138) 預研項目(51333030101) 國家自然科學基金(61372040)~~
【分類號】：TN03
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本文編號：1594255