电子科技大学学报Issue(4)：636-640,5.DOI:10.3969/j.issn.1001-0548.2014.04.029
带孔阵屏蔽腔电磁屏蔽特性的时域有限元分析
Analyses on the Electromagnetic Shielding Properties of Enclosure with Aperture Array Using Finite-Element Time-Domain Method
摘要
Abstract
In order to investigate the electromagnetic shielding performance of enclosure with aperture array, finite-element time-domain (FETD) formulations which are suitable for inner excitation cases are derived by using variation principle. The lumped resistor is incorporated into FETD code to appropriately consume the system energy and accelerate the process of energy decay. Meanwhile, the delivered power and electric field 3 meters away from the enclosure are calculated and compared with the measurement results or commercial software results and they agree well with each other. Moreover, the analysis on the influence of the various resonant modes and the operation frequency on the shielding performance of the enclosures are conducted based on the frequency-domain results. Finally, the lossy material is placed into enclosures to decrease the quality factor and alleviate resonance. The effectiveness of this method is verified by FETD computational results.关键词
孔阵/电磁屏蔽/有限元法/谐振/屏蔽腔Key words
aperture array/electromagnetic shielding/finite element method/resonance/shielding enclosure分类
信息技术与安全科学引用本文复制引用
聂宝林,杜平安..带孔阵屏蔽腔电磁屏蔽特性的时域有限元分析[J].电子科技大学学报,2014,(4):636-640,5.基金项目
国家自然科学基金(51175068)；中央高校基本科研业务费(E022050205) （51175068）
