DNG

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。

With double-negative metamaterials constructive relation, we deduce the differential equations that describe characters wave in DNG.

由双负介质的本构关系出发,利用时频转换关系, 推导出了描述双负介质中场与流的微分方程组.

The full-wave simulations of double negative ( DNG) medium are made using higher-order time-domain computational electromagnetic methods.

利用高阶时域电磁计算方法对双负媒质的电磁特性进行了全波仿真。

Numerical results show that DNG can reduce the backscattering of objects, but increase forward scattering of objects simultaneously.

数值结果表明，双负介质减小目标后向散射，同时增大了目标的前向散射。

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。

The scatter characteristic of electrically large objects coated by DNG is analysed.

分析了覆盖双负介质电大尺寸目标的散射特性。

Thermodynamic study on the extraction of Au ( iii) with DNG

DNG萃取金（Ⅲ）的热力学研究

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。