Millimeter-Wave Systems for Wireless Communications

用于无线通信的毫米波系统

• 批准号: 9979296
• 负责人: Wayne Shiroma
• 金额: $ 40万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-10-01 至 2003-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9979296&HistoricalAwards=false
• 关键词: Millimeter; Wave; Systems; Wireless; Communications

9979296DelisioOur society has experienced unprecedented growth in the exchange of information over wireless communication networks. This decade alone has witnessed an explosion in the use of electronic mail, the World Wide Web, cellular telephony, mobile computing, electronic pagers, and video conferencing. These services will undoubtedly become even more popular as we enter the 21St century, but today's wireless communication networks will soon be unable to handle the inflated bandwidth requirements for these and future interactive, broadband, multimedia services.The millimeter-wave band (30 - 300 GHz) clearly offers the spectrum to accommodate broadband, high-speed services. Achievable transmission rates are on the order of 5 Gbps -- more than 100 times the T3 (45 Mbps) transmission rate. In fact, this rate is competitive with that of optical fiber, which is currently the technology of choice to transmit large amounts of information. Millimeter-wave networks not only provide the necessary bandwidth for high bit rates and wide-band modulation schemes, but the associated short wavelengths also imply smaller antenna and circuit size, resulting in more compact modules for mobile communications. The increased atmospheric attenuation in this part of the spectrum is useful for secure satellite cross-links and high-capacity wireless local-area networks.In some nations the development of these systems is already well underway. For example, Japan has developed 60-GHz, 155-Mbps wireless local area networks for multimedia distribution. If the United States is to preserve its role as the world's leader in high-speed communications, it must act quickly. The Federal Communications Commission has considered frequency allocations as high as 150 GHz.Realizing communication components at millimeter wavelengths, however, presents a number of technical challenges in devices, circuits, coding, signal processing, and networks. At the University of Hawaii, faculty members of the College of Engineering have formed a strong team to focus on wireless technology in each of these areas. This proposal describes the device, circuit, and subsystem issues. A companion proposal describes the signal processing and networking issues.This research could enable an entirely new generation of millimeter-wave components for wireless communication. Improved passivation techniques promise electronic devices with low noise, high reliability, and high breakdown voltages. Revolutionary MEMS devices allow greater functionality and superior performance. The quasi-optical reflection amplifiers could be used in powerful solid-state transmitters. Quasi-optical diode and active mixers would be integral components in sensitive mixers with the dynamic range necessary for high-performance applications. Quasi-optical subsystems incorporating MEMS reconfigurable antennas and photonic crystals hold great promise. Possible communication applications include high-speed mobile personal communication systems, wireless local area networks, and emergency relief communications transceivers. Fueled by the demand for faster and faster data rates, these communication applications will continue to evolve toward millimeter-wave frequencies.***

9979296 Delisio我们的社会在通过无线通信网络交换信息方面经历了前所未有的增长。仅这十年就见证了电子邮件、万维网、蜂窝电话、移动的计算、电子寻呼机和视频会议的爆炸式使用。随着我们进入世纪，这些服务无疑将变得更加流行，但是今天的无线通信网络将很快无法处理这些和未来的交互式宽带多媒体服务的膨胀的带宽需求。可扩展的传输速率大约为5 Gbps --是T3（45 Mbps）传输速率的100多倍。事实上，这种速率与光纤的速率具有竞争力，光纤是目前传输大量信息的首选技术。毫米波网络不仅为高比特率和宽带调制方案提供必要的带宽，而且相关的短波长还意味着更小的天线和电路尺寸，从而导致用于移动的通信的更紧凑的模块。在这部分频谱中增加的大气衰减对于安全的卫星交叉链路和高容量无线局域网是有用的。在一些国家，这些系统的开发已经在进行中。例如，日本已经开发了60 GHz、155 Mbps的无线局域网，用于多媒体分发。如果美国要保持其作为世界高速通信领导者的地位，就必须迅速采取行动。联邦通信委员会已经考虑了高达150 GHz的频率分配。然而，实现毫米波长的通信组件在设备、电路、编码、信号处理和网络方面提出了许多技术挑战。在夏威夷大学，工程学院的教职员工组建了一支强大的团队，专注于这些领域的无线技术。本建议书描述了器械、电路和子系统问题。另一个配套提案描述了信号处理和网络问题。这项研究可以使全新一代的毫米波组件用于无线通信。改进的钝化技术有望使电子器件具有低噪声、高可靠性和高击穿电压。革命性的MEMS器件实现了更强大的功能和上级性能。这种准光反射放大器可用于大功率固态发射机。准光二极管和有源混频器将是灵敏混频器中不可或缺的组件，具有高性能应用所需的动态范围。准光学子系统结合MEMS可重构天线和光子晶体有很大的希望。可能的通信应用包括高速移动的个人通信系统、无线局域网和紧急救援通信收发机。在越来越快的数据速率需求的推动下，这些通信应用将继续向毫米波频率发展。