Innovative agile-antenna solutions for millimeter-wave wireless communications

由于包括移动通信、数据传输和智能传输在内的大量新兴应用，无线通信系统正在经历对数据速率的巨大需求。这种非常大的数据流量预计将在未来十年继续增长。为了实现这种高数据业务量，已经提出了使用更先进的分集技术和编码技术的第一种替代方案，以提高当前在6 GHz以下的微波频段工作的移动网络的频谱效率。然而，该传统选项受到硬件实现和信道条件的基本限制的显著限制。第二种选择是探索使用毫米波频段，以便利用从30 GHz到95 GHz甚至更高的宽带频段，为移动用户提供多Gbps的宽带接入。凭借这一功能，毫米波频段被视为未来5G无线移动网络的关键技术推动者。然而，在毫米波频段，使用传统天线系统的无线通信系统存在高路径损耗，这大大降低了其覆盖范围和容量方面的性能。为了克服这些挑战，我们在这个项目中建议使用新型的有源电磁带隙(EBG)结构来开发具有波束形成能力的先进的灵活天线，这将为未来的毫米波无线通信提供一个有吸引力的解决方案。

Wireless communication systems are experiencing a substantial demand in data rates due to a large number of emerging applications that include mobile communications, data transfer and intelligent transport. This very large data traffic is expected to continue increasing in the next decade. To achieve this high data traffic, a first alternative using more advanced diversity techniques and coding techniques has been proposed to improve the spectral efficiency of the current mobile networks, operating in microwave bands under 6GHz. However, this conventional option is significantly limited by fundamental limits on hardware implementation and channel conditions. The second alternative is to explore using mm-wave bands in order to take advantage of the wide spectrum bands available from 30 GHz up to 95 GHz and even beyond to provide multi-Gbps broadband access to mobile users. With this feature, mm-wave bands are seen as key technology enablers for future 5G wireless mobile networks. However at mm-wave bands, wireless communication systems using conventional antenna systems suffer from high path loss, which reduces their performances significantly in terms of coverage and capacity. To overcome these challenges, we propose in this project to develop advanced agile antennas with beamforming capability using novel active electromagnetic band gap (EBG) structures, which present an attractive solution to future mm-wave wireless communications.