DUAL BAND FREQUENCY SELECTIVE SURFACE BASED ON CIRCULAR APERTURE-COUPLED PATCHES

5. CONCLUSIONS To study effectively study magnetized PPCs, first, a modified FDTD has been proposed to deal with the megnetoplasma. The approach introduce the current J instead of the displacement D, then based on the LT principle, solve analytically the constitutive relation equation to keep more accurate for large values of xp, v, and/or xb. Second, numerical simulation results by our FDTD algorithm demonstrated that the modified FDTD algorithm is correct and efficient. Finally, our FDTD algorithm is applied to investigate bandgap characteristics of 2D magneto PPC while adjusting plasma parameters and structure parameters. The following conclusions have been obtained, i.e., increasing the plasma frequency can more broaden the bandwidth for TM mode than that of TE mode, whereas the plasma collision frequency plays no role in broadening the bandwidth for both TM and TE mode, and also the electron gyrofrequency cannot broaden the bandwidth for TE mode.