POYNTINGS THEOREM FOR THE FINITE-DIFFERENCE - TIME-DOMAIN METHOD

被引：17
|
作者：
DEMOERLOOSE, J
DEZUTTER, D
机构：
[1] Department of Information Technology, University of Ghent, Ghent, B‐9000
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 1995年 / 8卷 / 05期
关键词：
FINITE-DIFFERENCE TIME-DOMAIN METHOD; POYNTINGS THEOREM; ELECTROMAGNETICS;
D O I：
10.1002/mop.4650080512
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A discretized version of Poynting's theorem is rigorously derived from the standard FDTD equations. By using the correct averaging expressions for the Poynting vector itself the energy density and the current power density, the well-known form of the theorem in continuous space is obtained. The theorem is checked by calculating the radiated power of an antenna in two ways. It is also shown that the use of nonstandard FDTD equations for thin wires violates the theorem. (C) 1995 John Wiley & Sons, Inc.
引用
收藏
页码：257 / 260
页数：4
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