Physical Explanation to the Electromagnetic Scattering of a Thin Metallic Plate at Very Low Frequencies

	Physical Explanation to the Electromagnetic Scattering of a Thin Metallic Plate at Very Low Frequencies
	Yunhua Zhang
	2007
会议名称	Asia Pacific Microwave Conference
会议日期	2007
会议地点	Bangkok, THAILAND
关键词	low-frequency scattering method of moments EFIE RWG basis Loop/Tree basis
页码	1421-1424
通讯作者	北京8701信箱
英文摘要	The scattering of a thin metallic plate at very low frequencies is investigated by using the method of moments (MoM) with loop/tree basis function. Calculations show that at low frequencies the scattering of a very thin plate and the scattering of a zero-depth plate are very different not only for the current distribution but also for the RCS. However, the differences are very small at high frequencies. A physical explanation is given to the phenomenon: both the electromagnetic dipole and magnetic dipole are excited simultaneously when illuminated by a very low frequency electromagnetic wave for a general three-dimensional object but the magnetic dipole could not be excited for a zero-depth plate. The appearance of the magnetic dipole makes the scattered electric far field unstable due to the finite digital precision of the computer. A simple method is shown how to make the far field calculation stable.
收录类别	CPCI
会议网址	://000261353300362
会议录	Asia Pacific Microwave Conference-Proceedings
会议录出版者	IEEE
会议录出版地	NEW YORK
学科主题	微波遥感
语种	英语
ISBN号	978-1-4244-0748-4
内容类型	会议论文
源URL	[http://ir.cssar.ac.cn/handle/122/1784]
专题	国家空间科学中心_微波遥感部
推荐引用方式 GB/T 7714	Yunhua Zhang. Physical Explanation to the Electromagnetic Scattering of a Thin Metallic Plate at Very Low Frequencies[C]. 见:Asia Pacific Microwave Conference. Bangkok, THAILAND. 2007.://000261353300362.