采用在传统传输线上周期性地加载串联电容C和并联电感L构造了一种二维负折射率传输线微波媒质，不加载L和C的传输线单元则组成正折射率传输线微波媒质，由这两种煤质构成了一个完美透镜系统。使用Bloch理论，导出了这种正负折射率媒质的色散关系和布洛克(Bloch)阻抗,并且计算出了在由点源在各个区域产生的分布电压幅度、相位- the traditional transmission line periodically loaded parallel series capacitor C and inductance L consist of a class of two-dimensional microwave transmission line negative refractive index medium, the medium which do not load L and C of the transmission line unit consists of positive refractive index medium microwave transmission line, the two kinds of medium above form a perfect lens system. Based on Bloch theory, the dispersion relations and Bloch (Bloch) impedance of positive and negative refractive index is derived. And voltage amplitude which is produced by the point source in various regions is calculated