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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Gao Cheng Zhou Bihua Chen Bin Shi Lihua Li Yanxin Nie Yubao |
| Copyright Year | 2003 |
| Description | Author affiliation: Eng. Inst. of Nanjing, China (Gao Cheng; Zhou Bihua; Chen Bin; Shi Lihua; Li Yanxin; Nie Yubao) |
| Abstract | By global analysis of the generator, the loop antenna and the shielding enclosure with the FDTD method, the small-loop approach for measurement of the magnetic field shielding effectiveness was simulated numerically in this paper. Nonuniform meshes and reduced c FDTD method were adopted to solve the contradiction of selecting space step and time step: this makes it possible to calculate the steel shielding efficiency of large dimension. The interaction of shielding enclosure and loop antenna was modeled. The setup of the simulation coincides with the real conditions of engineering testing. The conclusions from the numerical calculation are: the waveform of EMP transparent though the steel shielding enclosure is greatly different from the incident EMP waveform. The rise time changes to be very slow and the width of pulse gets long. The calculating and real testing indicate that the shielding efficiency of the steel enclosure to the EMP with longer rise time (/spl mu/s) and wider duration (1ms) is only about 40 dB, the rise time of transparent pulsed magnetic field reaches ms and the pulse width is more than 10ms. The shielding efficiency of the steel enclosure to low frequency electromagnetic field is much lower. |
| Sponsorship | China Inst. of Commun. (CIC) Beijing Univ. of Posts and Telecommun. (BUPT) Inst. of Elec. Eng. of Japan (IEEJ) Inst. of Electron., Information, Commun. Eng. of Japan (IEICEJ) |
| Starting Page | 541 |
| Ending Page | 544 |
| File Size | 284216 |
| Page Count | 4 |
| File Format | |
| ISBN | 7563508023 |
| DOI | 10.1109/CEEM.2003.238408 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-11-04 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | China Institute of Communications(CIC) |
| Subject Keyword | Steel Magnetic shielding EMP radiation effects Space vector pulse width modulation Magnetic field measurement Finite difference methods Testing Magnetic analysis Antenna measurements Analytical models |
| Content Type | Text |
| Resource Type | Article |
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