Static and dynamic ultra-wideband (UWB) arbitrary pulse shaping using electromagnetic bandgap (EBG) filters

无线世界中最有前途的最近发展之一是向超宽带（UWB）脉冲基通信的转变，这是由最近采取的步骤所激励的，以使得能够在世界各地未经许可地使用所需的频带。拟议的三年项目监督几个新的无源微波结构的发展，以适应新兴的UWB系统的需求。这项理论和实验研究将使来自INRS-EMT和麦吉尔大学的两个大学团队，与其工业合作伙伴Apollo Microwaves合作，领导加拿大和全球为新兴UWB市场开发具有成本效益的高性能解决方案的努力。具体来说，我们的研究是针对解决问题的产生UWB脉冲与任意定义的形状，这是具有根本重要性的UWB为基础的应用程序的未来发展。我们的方法是基于一类新的微波滤波器，具有电磁带隙（EBG），这是简单的实现各种成熟的微波技术，并提供前所未有的设计灵活性。本研究将致力于以下几个方面的研究：（i）开发精确和通用的综合工具，用于设计定制化的超宽带无源结构;（ii）设计、制造和表征基于同轴线和脊波导技术的EBG的简单实用的静态超宽带任意脉冲成形滤波器;（iii）设计、实现和测试完全可重构的超宽带任意脉冲发生器。这将对无线电信、军用雷达、传感网络和生物医学成像等各种UWB候选应用产生巨大影响。我们的方法的灵活性和成熟的微波技术，我们的概念可以实现将产生符合成本效益，大规模生产的结构，适合商业化。最后，这一项目产生的新知识和对与这一工作不同阶段有关的高素质人员的培训肯定将有助于提高加拿大在高技术部门的全球竞争力。

One of the most promising recent developments in the wireless world is the move towards ultrawide-band (UWB) pulse-based communication, spurred on by recent steps being taken to enable the unlicensed use of the required frequency band around the world. The proposed three year project oversees the development of several novel passive microwave structures tailored to the needs of emerging UWB systems. This theoretical and experimental research will allow the two university teams from INRS-EMT and McGill Univ., in collaboration with their industrial partner Apollo Microwaves, to lead Canadian and worldwide efforts in developing cost-effective, high-performance solutions for the emerging UWB market. Specifically, our research is directed toward solving the problem of generating UWB pulses WITH ARBITRARILY DEFINED SHAPES, which is of fundamental importance for the future development of UWB-based applications. Our approach is based on a new class of microwave filters featuring electromagnetic bandgaps (EBGs), which are simple to implement in a wide variety of well-established microwave technologies and offer unprecedented design flexibility. Research effort will be directed as follows: (i) Accurate and general synthesis tools will be developed for the design of customized UWB-oriented passive structures; (ii) Simple and practical static UWB arbitrary pulse-shaping filters based on EBGs in coaxial-line and ridge waveguide technologies will be designed, fabricated and characterized; (iii) Fully-reconfigurable UWB arbitrary pulse generators will be designed, implemented and tested. This will have a dramatic impact in such diverse UWB-candidate applications as wireless telecom, military radar, sensing networks and biomedical imaging. The flexibility of our approach and the maturity of the microwave technologies in which our concepts can be implemented will yield cost-efficient, mass-producible structures amenable to commercialization. Finally, the new knowledge generated from this project and the training of highly qualified personnel associated to the different stages of this work will certainly contribute to enhance Canada's global competitiveness in high-technology sectors.