左手材料驱动的非辐射和辐射结构
Non-radiating and radiating configurations driven by left-handed metamaterials
摘要：
它示出了一对相同的发射器（例如，线偶极天线）的焦点的光盘，由左手的超材料（一个“完美”的镜头），形成一个非辐射电磁配置。发射极被馈送有相等幅度和π异相的电压。详细的时域有限差分（FDTD）建模表明，有非传播的电磁场产生-场保持限制在发射器和透镜之间的区域内。系统的能量平衡表明，系统的抗辐射能力很低。这意味着输入功率在透镜的体积中被转换为热量，并且只有一小部分被辐射。系统性能表明，干扰的非传播电磁场的配置与外部引入的对象的存在刺激辐射。这表明可能的探测器应用。还研究了同相馈电电压，其结果是天线的辐射电阻增加。
英文摘要：
It is shown that a pair of identical emitters (e.g. wire dipole antennas) in the focal points of a disc, made of left-handed metamaterial (a "perfect" lens), form a non-radiating electromagnetic configuration. The emitters are fed with voltages of equal magnitude and pi-out-of-phase. Detailed finite-difference time-domain (FDTD) modeling shows that there are non-propagating electromagnetic fields generated - fields that remain confined within the region between the emitters and the lens. The energy balance of the system shows that the radiation resistance of the system is very low. This means that the input power is converted to heat in the volume of the lens and only a small fraction of it is radiated. The system performance shows that disturbing the configuration of the non-propagating electromagnetic fields with the presence of an externally introduced object stimulates radiation. This suggests possible detector applications. In-phase feeding voltages are also studied with the consequence that the radiation resistance of the antennae is increased.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
