Miniaturized electromagnetic band gap structures for wireless applications

目标是开发小型化和宽带的电磁带隙(EBG)结构，适用于微波低频段和THz频段，在低微波频段，将针对两类应用：高速封装和结构中的EMI滤波和开关噪声抑制，以及低剖面天线和高增益天线阵的设计。目前，高速电路板和封装中的开关噪声和杂散传播问题还没有有效的解决方案。基于我们以前在印刷电路板噪声抑制方面的工作，我们希望这里提出的小型化结构能够在芯片封装和越来越多地用于更高密度应用的小电路板中提供有效的抑制。在天线方面，EBG结构已被证明可以提供更高的性能，从而带来更高的增益和效率。然而，由于对小型化和宽带天线的不懈推动，为了使EBG提高小型天线的性能，EBG必须小型化以在天线介质中创造足够的均质性。在早期的工作中，我们已经证明了在天线阵应用中，EBG可以减少相邻平面天线之间的互耦合。小型化的EBG将有可能减小相邻天线之间的距离，从而实现更高的天线密度，从而获得更高的单位面积天线阵增益。基于低色散平面(金属化)和非平面(光子晶体)非共振EBG的概念，宽带EBG结构将被开发。近年来，由于THz技术在传感器相关技术中的未被开发的潜力，见证了THz技术的急剧增长。在这样的体制下，纳米技术与先进材料相结合，将是实现具有可调电容和电感特性的谐振器的关键。我们的研究重点将是开发有效的计算工具来模拟新型的光子带隙晶体和结构。

The objective is to develop miniaturized and wideband Electromagnetic Band Gap (EBG) structures for applications in two frequency regimes: The lower portion of the microwave regime and the THz regime.In the lower microwave regime, two classes of applications will be targeted: EMI filtering and switching noise suppression in high-speed packages and structures, and the design of low-profile antenna and high-gain antenna arrays. Presently there is no effective solution for the problem of switching noise and spurious propagation in high-speed boards and packages. Based on our previous work on noise mitigation in printed circuit boards, we expect the miniaturized structures proposed here to provide effective suppression in chip packages and for small circuit boards that are increasingly used for higher-density applications. In Antennas, EBG structures have proven to provide enhanced performance leading to higher gain and efficiency. However, since the drive for miniaturized and wideband antennas have been relentless, for EBGs to enhance the performance of small antennas, EBGs must be miniaturized to create sufficient homogeneity in the antenna medium. In earlier works, we have demonstrated that EBGs can decrease mutual coupling between adjacent planar antennas in antenna array applications. Miniaturized EBGs will have the potential to decrease the distance between adjacent antennas and thus achieve higher antenna density leading to higher antenna array gain per unit area.For miniaturization, we will use high-k materials. Wideband EBG structures will be developed based on the concept of low-dispersion planar (metallization) and non-planar (photonic crystals) non-resonating EBGs.Recent years have witnessed a dramatic increase in the THz technology due to its unexplored potential in sensor-related technologies. In such regimes, nanotechnology in conjunction with advanced materials will be critical in achieving resonators with tunable capacitive and inductive properties. Our research thrust will be on developing effective computational tools to model novel photonic band gap crystals and structures.