A finite-difference time-domain method for solving electromagnetic problems with bandpass-limited sources

被引：48
|
作者：
Pursel, JD [1 ]
Goggans, PM [1 ]
机构：
[1] Univ Mississippi, Dept Elect Engn, University, MS 38677 USA
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 1999年 / 47卷 / 01期
关键词：
bandpass-limited; complex-envelope; FDTD; wave equation;
D O I：
10.1109/8.752978
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：
The complex-envelope representation of bandpass-limited signals is used to formulate a bandpass-limited vector wave equation and a new finite-difference time-domain (FDTD) scheme that solves the bandpass-limited vector wave equation is presented. For narrow-band electromagnetic systems, this new method allows the time step to be several orders of magnitude larger than current FDTD formulations while maintaining an amplification factor equal to one. Example results obtained by this method are presented and compared with analytic solutions.
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页码：9 / 15
页数：7
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