Investigation of beam scanning in reflectarray using tunable elements

小型化和集成化的高性能(多标准、多频段)天线系统、新型智能(自适应)和可重构天线阵结构、柔性天线系统和共形结构是下一代无线信息系统和传感器网络的关键使能技术。最近，天线工程师和科学家对用于未来宽带商业通信的毫米波(MMW)频段越来越感兴趣。MMW系统是下一代无线技术，可以为电子设备之间的短距离提供高达多Gbps的无线连接。毫米波成像也因其在毫米波波段的高分辨率和穿透性相结合的特点而成为一个活跃的研究领域。它在公安、非侵入性包裹检测等方面具有潜在的应用前景。

Miniaturized and integrated high performance (multi-standard, multi-band) antenna systems, development of novel intelligent (adaptive) and reconfigurable antenna array structures, flexible antenna systems, and conformal structures are among the key enabling technologies for future generation wireless information systems and sensor networks. Recently, antenna engineers and scientists have become more interested in the Millimeter Wave (MMW) bands for future broadband commercial communications. MMW systems are the next generation of wireless technology that can provide up to multi-Gbps wireless connectivity for short distances between electronic devices. MMW imaging has also become an active field of research due to the combined features of high resolution and penetration at MMW band. It has potential applications in public security and non-invasive parcel inspection.