针对电磁场与电磁波课程特点,采用Matlab图形用户界面(Graphical user interface,GUI)技术,将电磁场与电磁波物理图像可视化。文章以双电荷系统为例,实现了该系统二维电场分布图像和三维电场分布图像输出。通过软件直观展示,有效帮助学...针对电磁场与电磁波课程特点,采用Matlab图形用户界面(Graphical user interface,GUI)技术,将电磁场与电磁波物理图像可视化。文章以双电荷系统为例,实现了该系统二维电场分布图像和三维电场分布图像输出。通过软件直观展示,有效帮助学生建立电磁场与电磁波的相关物理图像。展开更多
The frequency selective surface (FSS) has been widely applied by means of its spatial frequency-filter characteristic, but it is always designed and used as a device with fixed frequency response. In order to tune the...The frequency selective surface (FSS) has been widely applied by means of its spatial frequency-filter characteristic, but it is always designed and used as a device with fixed frequency response. In order to tune the resonant frequency and switch the frequency channel, a scheme of mechanically tunable FSS is theoretically analyzed by using the method of Floquet's vector modes expansion and fields matching. A double-layer tunable FSS with dipole element can perform a dynamic range of resonant frequency covering whole X-band.展开更多
文摘The frequency selective surface (FSS) has been widely applied by means of its spatial frequency-filter characteristic, but it is always designed and used as a device with fixed frequency response. In order to tune the resonant frequency and switch the frequency channel, a scheme of mechanically tunable FSS is theoretically analyzed by using the method of Floquet's vector modes expansion and fields matching. A double-layer tunable FSS with dipole element can perform a dynamic range of resonant frequency covering whole X-band.
