摘要
本文应用谱域导抗法推导了不同源激励产生的电场、磁场格林函数的一般表达式.它的基本思路是,找到电流源、磁流源分别对应的等效传输线.应用传输线理论求出电场、磁场所对应的量,通过坐标变换回到原来坐标系中,求得所需的谱域格林函数.这样问题变成了确定不同等效传输线上的电流和电压,大大简化了谱域格林函数的推导过程,尤其是对于多层介质的情况.本文最后给出了四种不同类型的谱域格林函数,证明了此方法的正确性.
The derivation of general and concise expressions of spectral-domain electric and magnetic Green's functions for a multilayered medium are given by using spectral-domain immi-ttance approach. In the spectral-domain, two equivalent transmission lines are found, which correspond to the electric and magnetic current sources respectively. Spectral-domain Green's functions are then obtained by using transmission-line theory and coordinate transformations. So the determination of the spectral-domain Green's function is accomplished by the investigation of voltages and currents on the corresponding equivalent circuits. Finally, the validity of this method is confirmed by four types of spectral-domain Green's function.
出处
《微波学报》
CSCD
北大核心
1996年第2期83-88,共6页
Journal of Microwaves
关键词
格林函数
谱域导抗法
传输线理论
平面分层介质
Green's functions, Spectral-domain immittance approach, Transmission-line theory