平面微波光子晶体表面波带隙的直线法分析

运用直线法对一种以微带基片为载体的平面微波光子晶体进行了分析.详细介绍了直线法分析过程,并对直线法中阻抗矩阵的提取方式作出了改进.在不同的周期边界条件下,通过对由直线法所得的特征方程的求解,得出所对应的本征频点,从而求得整个平面微波光子晶体的表面波色散图,标明表面波带隙所在.文中分别对矩形贴片型以及环形贴片型光子晶体进行了分析.

Analysis of Surface Wave Bandgap in Planar Microwave Photonic Crystals Using Method of Lines

The Method of Lines(MoL) is introduced to analyze a planar photonic crystal constructed in the micro-strip structure. The process of MoL is detailed, and the deduction of the impedance matrix is improved. For different periodic boundary conditions, the corresponding resonance frequencies are gained by solving the characteristic equation gotten through MoL, and the dispersion diagram of the surface wave for the planar photonic crystal is achieved. finally, the photonic crystals with rectangle patches or loop patches are analyzed.