Research And Application Of New Type Artificial Electromagnetic Shileding Material

Nowadays, military contest between super countries is gradually shifting from old military force to the high-tech information war. The militarists start to use electromagnetic energy to defeat each other, rendering the battle field condition even more complicated. The wireless electronic devices on the battle field are emitting more and more energy with a much broader frequency range, which requires even higher standard of the electromagnetic compatibility of the electronic devices. Besides the possible interruptions within our own equipments, the enemy may also use the electromagnetic energy to destroy our electronic devices. In order to make sure that the devices can work normally without being interrupted, it is very important to design a new type of electromagnetic shielding technology.There are seven parts of this article. First we summarize the recent developments of meta-material, and the potential application of it. Then we use classical electromagnetic theory to analyze its reflective and refractive properties to make sure that this kind of material does have extraordinary value in making shielding material. Then we use Drude model to simulate meta-material, and deduce its FDTD formulas to precisely and objectively study its properties. Later, we calculate its electromagnetic parameters and use improved PBC-FDTD algorithm to analyze them. And we use the deduced formulas to simulate the material’s shielding properties. We also calculate the detailed formulas of the continuous or discontinuous thin wire structure parameters, and discuss their relations with the shielding effects. At last, we generate a large amount of mathematical simulations and conclude that the shielding properties of meta-material would change according to certain laws when the size of its periodic structure changes. And based on these changing laws, we can provide strong theoretical support in making super efficient shielding material.