各向同性与各向异性超材料的微波加热应用仿真研究

Simulation of Isotropic and Anisotropic Metamaterials in Microwave Heating Applications

超材料使用人工制成的微结构单元实现了自然界中较少见的物质本征参数,这种结构的负折射率等特性改变了人们对传统微波应用的认识,是最近十年内的研究热点。本文初步研究了各向同性与各向异性超材料在微波加热应用中的特性。仿真结果表明,超材料结构可以用来控制微波加热箱体的特性,提高被加热负载的温度均匀性,降低微波源功率反射。

Metamaterials are structures composed of artificial micro cells and their constitutive parameters are rarely seen in nature. Some characteristics of metamaterials for example minus refractive index have changed the understanding of traditional microwave appplications, and so the metamaterials have being attracted more attentions in recent 10 years. Isotropic and anisotropic metamaterials in microwave heating applications were studied. The simulation results show metamaterials can be used to control the charac- teristics of the microwave heating cavity, improving the temperature uniformity of the heated loads and reducing the microwave power reflection.