DNG怎么记

The numerical simulation of the new type of DNG is studied by using FDTD method and CST software, and the physical mechanism analysis for this structure is discussed in detail.

用时域有限差分法和CST软件对该新型结构进行了模拟对比，并对其物理机理进行了分析，解释了其双负效应发生的原因。

By using periodical condition the dispersion relation is obtained for 1D infinitely periodical photonic crystal composed of SNG or DNG.

对于SNG或DNG构成的光子晶体，利用周期性条件，进而得到了一维无限周期光子晶体的色散关系。

The design method and electromagnetic characteristics of cavity backed microstrip antenna with double negative ( DNG) substrates are studied in the paper.

研究了以双负材料为衬底的背腔微带天线的设计方法与电磁特性。