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期刊论文

An Efficient Multiregion Model for Electromagnetic Scattering and Radiation by PEC Targets

崔铁军Tie Jun Cui Senior Member IEEE Wei-Bing Lu Zhi-Guo Qian Wei Hong Member and Xiao-Xing Yin

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 52, NO.7, JULY 2004,-0001,():

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摘要/描述

An efficient multiregion model has been proposed for the fast implementation of the electromagnetic scattering by perfectly electrical conducting (PEC) targets and the radiation of point sources or wire antennas near PEC targets. In the multiregion model, the PEC target under consideration is divided by multiple regions depending on the position of point source/antenna or the incident direction of plane waves. Then the method of moments (MoM) is used on the first region, which is close to the source or is the illuminated region, to obtain the accurate electric current. The mutual coupling between different regions are considered approximately based on the magnetic-field integral equation, from which closed-form approximations for electric currents on other regions are derived. Because MoM is only performed on the first region, the number of unknowns in the new model is much fewer than that in the full MoM analysis, making the new model much more efficient. Compared with the published hybrid methods, the multiregion model gives a more reasonable physical explanation, and provides a better accuracy in both currents and scattered fields. Numerical simulations for two-dimensional (2-D) problems (transverse-magnetic/transverse-electric) and 3-D problems are given to test the validity and efficiency of the proposed modeling.

版权说明:以下全部内容由崔铁军上传于   2005年03月03日 21时34分26秒,版权归本人所有。

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